57 results about "All fiber" patented technology

The invention discloses a method for establishing a composite material RVE model considering fiber dislocation, and relates to the technical field of composite materials and three-dimensional modeling, the method comprises the following steps: generating sections of a plurality of fibers in a two-dimensional RVE area, and recording central point coordinates of the fibers; according to the central point of each fiber in the two-dimensional RVE area, generating a plurality of corresponding central control points for each fiber in the Z-axis direction; fitting the plurality of central control points of each fiber into a curve to obtain a distribution track of the fiber along the Z-axis direction, and recording the distribution track as a central point path of the fiber; according to the cross sections of the fibers, sweeping operation is carried out along the central point path of each fiber, three-dimensional entities of all the fibers are generated, and the three-dimensional entities and a base body are assembled to form a three-dimensional RVE model. According to the method, the defect that only straight fibers can be generated in an existing composite material RVE modeling method is overcome, and the three-dimensional RVE model established through the method is more consistent with the actual composite material structure characteristics.

The invention provides an intelligent denoising and missing value filling method for distributed optical fiber strain data, and the method comprises the steps: coupling a rock and a distributed optical fiber under a triaxial test condition, and collecting optical fiber strain data through a distributed optical fiber monitoring system; representing and preprocessing the optical fiber strain data according to a time sequence to obtain noiseless optical fiber strain data; constructing a noisy point identification and data filling model, and training the noisy point identification and data filling model through the noiseless optical fiber strain data; and according to the trained noisy point identification and data filling model, carrying out de-noising processing and missing value filling on all the optical fiber strain data containing the spatial position information, and updating the parameters of the noisy point identification and data filling model in real time according to the change of a strain field in the monitored space along with time. The method provides high-precision data processing support for optical fiber monitoring, and has important engineering application value.

The invention relates to the technical field of composite material forming, and provides a fiber composite material barrel forming method which comprises the following steps: laying a fiber layer on the outer side surface of a barrel mold by fiber materials; carrying out pre-curing treatment on the fiber layer; the fiber layer is pulled to move on the outer side face of the barrel mold in the traction direction; laying a second fiber layer; carrying out pre-curing treatment; repeating the previous steps to form all fiber layers; and performing final curing treatment to obtain a barrel finished product. In this way, the multiple fiber layers are sequentially laid in the traction direction, and pre-curing treatment is carried out after laying of each fiber layer is completed. And therefore, the adhesive force with the cylinder mold is reduced, and the cylinder mold can move along the axial direction. The continuous laying of the fiber layer and the continuous forming of the barrel finished product are realized. And meanwhile, the length of a barrel product can be cut according to the design requirement, the length of the barrel product is not limited by the length of a barrel mold, and the flexibility is good. The invention further provides a production line.

The invention discloses a long-distance telemetering phi-OFDR system based on common-diameter self-reference, belongs to the technical field of optics, and aims to solve the problem that the spatial resolution of an existing long-distance phi-OFDR system is seriously constrained by a sensing distance and is difficult to break through meter-scale distributed monitoring. A light source outputs linear frequency sweeping laser; the to-be-measured optical fiber is provided with a local reflection source array; a first port of the polarization-maintaining circulator is connected with the light source, a second port is connected with the transmission optical fiber, the transmission optical fiber is connected with the to-be-detected optical fiber, and the photoelectric detector, the data acquisition module and the calculation module are sequentially connected. In the first scheme, the end part of a to-be-detected optical fiber is connected with a Faraday rotating mirror, a third port of a polarization-maintaining circulator is connected with an input end of a polarization beam splitter, and two output ends of the polarization beam splitter are respectively connected with two photoelectric detectors. In the second scheme, all the optical fibers are polarization-maintaining optical fibers, the end of the optical fiber to be detected is connected with a reflector, and a third port of the polarization-maintaining circulator is connected with a photoelectric detector.

The present invention provides an all-fiber-based pressure monitoring system, relating to the field of pressure monitoring. The all-fiber-based pressure monitoring system comprises: an upper electrode layer, an intermediate sensing microstructure layer, a lower electrode layer, and at least one pressure sensor; the upper electrode layer comprises first conductive stripes and first non-conductive stripes spaced apart; the lower electrode layer comprises second conductive stripes and second non-conductive stripes spaced apart; the mirror image of the first conductive stripes on the lower electrode layer intersects the second conductive stripes at a set angle; the intermediate sensing microstructure layer is located between the upper and lower electrode layers; the intermediate sensing microstructure layer is a conductive fabric; the pressure sensor is located between the upper and lower electrode layers; the mirror image of the pressure sensor in the upper electrode layer is located on the first conductive stripes, and the mirror image of the pressure sensor in the lower electrode layer is located on the second conductive stripes. The present invention can achieve pressure monitoring while maintaining comfort.

This utility model discloses a new energy main station security access authentication device, including a security box. The security box has a partition inside, on which a station-side security access authentication device and a field-side security access authentication device are placed. A fixed crossbar is located on the front side of the partition, with rotatable covers rotatably connected to both the upper and lower sides of the fixed crossbar. The security box has corresponding latches with slots. A lock and a knob are located in the middle of the front side of the fixed crossbar. An anti-misoperation rod is rotatably connected to the lower side of the turntable, and the anti-misoperation rod is engaged with the rotating rod of the knob. This utility model protects the interface between the station-side and field-side security access authentication devices through the rotatable covers, allowing operation of the fiber optic connection only with a key, thus ensuring high security. The knob and plug design allow for quick disconnection of all fiber optic connections between the station-side and field-side security access authentication devices, making it suitable for emergency situations.

An all fiber optic electric field sensor for indoor switchgear phase conductor bus bar voltage sensing, which is galvanically isolated from the electric circuit of the switchgear power distribution system, featuring a single mode optical transmitter, installed on the front side of a switchgear cubicle, which connects via an optical patch cord routed in conduit to a passive, in-line, all fiber polarization filtering module installed on the back of the switchgear cubicle, which connects to an all dielectric single mode fiber optic voltage sensor cable with standardized Kerr constant, routed within insulating all dielectric rigid conduit, which is secured with mechanical support brackets, featuring integrated vibration dampers, which traverses an optical path in parallel with a phase conductor bus bar and a ground bus, and where the degree of electric field induced birefringence occurring on the optical path which is perpendicular to the electric field radiating from the phase conductor is measured by observing the phase shift occurring in the orthogonally polarized modes during traversal of the single mode electro-optical voltage sensor cable perpendicular to the electric field, where an output of the sensor cable is analyzed with a 1×2 polarization maintaining fiber coupler which divides the polarized optical signal power equally to measure the preponderance of right circular polarized light over left circular polarized light, with the difference in optical intensity observed at the photodiodes proportional to the phase shift which varies exponentially with the electric field potential as an inverse function of linear distance from the phase conductor.

The application discloses a waterproof and breathable flexible resistance type pressure sensor based on a PA6 full-fiber network and a preparation method thereof, and belongs to the technical field of flexible pressure sensors.The application prepares a plurality of fiber structures based on PA6 through an electrostatic spinning technology and obtains a full-fiber resistance type pressure sensor.PA6 / PS fibers serve as the outermost layer to provide waterproof characteristics, PA6 / Au fibers serve as a flexible electrode layer, pure PA6 fibers serve as an isolation layer, and PA6 / PANI fibers serve as a sensitive layer.The introduction of the isolation layer significantly improves the linearity of the sensor, the linear detection range gradually increases with the increase of the thickness of the isolation layer, and the sensor has good repeatability and fast response recovery time.In addition, the sensor prepared by the application adopts a full-fiber structure and has good air permeability, so that sweat can be fully volatilized during long-time wearing;the outer layer of the sensor is encapsulated by hydrophobic fibers, and the sensor has good waterproof characteristics.

This invention relates to the field of furnace top construction technology, and more particularly to an auxiliary device for the construction of a full-fiber nano-insulation system for furnace tops. The device includes a long track approximately the same length as the channel steel of the furnace top, and four positioning mechanisms located at the four corners of the long track surface. The invention uses an electric cylinder to lower a lifting seat, causing the rollers at the bottom of the fixed frame to contact the material surface. The lifting seat then continues to descend slightly, allowing the movable column to move vertically along the sliding holes. A compression spring continuously applies downward pressure, and a second motor drives a rotating rod to rotate via a transmission shaft, causing the eccentric wheel to vibrate at high frequencies. This structure solves the problem in the prior art where manual smoothing and compaction makes it difficult to ensure uniform filling, especially at the junction of brick piles and channel steel, and in irregularly shaped areas where gaps easily appear. It ensures that the nano-insulation material fully fills all complex corners, guaranteeing the overall bonding effect between the insulation layer and the furnace top structure.

1. The name of the present design product: optical fiber end face detection judgment graphical user interface for electronic equipment. 2. The use of the present design product: for an electronic device. 3. The design points of the present design product: in the graphical user interface. 4. The picture or photo that best indicates the design points: design 1 interface change state figure 1. 5. Design 1 is designated as the basic design. 6. The use of the graphical user interface: for optical fiber end face detection judgment and viewing detection results. 7. The human-computer interaction mode of the graphical user interface: design 1 front view interface is a detection layout interface. The left sidebar is the menu bar, and the 4 buttons from top to bottom in the menu bar are the setting interface button, the real-time interface button, the detection interface button, and the result interface button. The middle desktop is used to display the current real-time end face image, and the right side is used for real-time page adjustment function items. Click the detection interface button in the left menu bar of the main view to enter design 1 interface change state figure 1. This interface is used to set the detection mode and view the detection results. Click the Focus button on the right side of design 1 interface change state figure 1 to enter design 1 interface change state figure 2. This interface is used for detection start. Click the camera icon button on the right side of design 1 interface change state figure 2 to start detection. After completing the detection, automatically enter the current result page. Design 2 main view and design 2 interface change state figure 1 are the same as design 1 main view and design 1 interface change state figure 1. Click the A detailed information review button on the right side of design 2 interface change state figure 1 to enter design 2 interface change state figure 2. This interface is a review detection result interface. Design 3 main view and design 3 interface change state figure 1 are the same as design 1 main view and design 1 interface change state figure 1. Click the B multi-picture icon button on the right side of design 3 interface change state figure 1 to enter design 3 interface change state figure 2. This interface enters the current result overview mode. Design 4 main view and design 4 interface change state figure 1 are the same as design 1 main view and design 1 interface change state figure 1. Click the result interface button in the left menu bar of design 4 interface change state figure 1 to enter design 4 interface change state figure 2. This interface is used to view all previous detection results. After selecting the detection report to be viewed in the selection box in the upper left corner of the design 4 interface change state diagram 2, enter the design 4 interface change state diagram 3, which is a detection result analysis interface. The upper left half of the left side can access the inspection record path and select the detection record set. The lower half of the left side is the product layout diagram at the time of detection according to the detection record. The right side is the detection result screen of all fiber end faces under the currently selected record set. 8. Other situations that need to be explained Other explanations: The letter A in the design 2 interface change state diagram 1 is not the content of the interface, and is not the content of the application for protection. The letter B in the design 3 interface change state diagram 1 is not the content of the interface, and is not the content of the application for protection.

This application relates to a method and apparatus for digital transformation of ODN facilities. The method includes: obtaining a character array of box names and a character array of port names based on an actual box image; identifying the box under maintenance and installing box tags and fiber optic cable segment tags directly connected to the box; obtaining a port status array based on a box image after all fiber optic cable segment tags have been installed; locating and identifying each installed fiber optic cable segment tag, and obtaining a port name-bound tag object array based on the located and identified box image, port name character array, and port status array; constructing a meter-length pairing structure object array between box ports based on the meter-scale image of the fiber optic cable segment; and constructing a tag pairing relationship between box ports based on the box topology connection table, the meter-length pairing structure object array between box ports, and the port name-bound tag object array. This application allows a single person to quickly assemble tags for boxes or fiber optic cable segments and complete the digital transformation, with high efficiency and low construction difficulty.

The invention belongs to the technical field of flexible electronics, and particularly relates to a low-impedance polyimide-based all-fiber structure flexible pressure sensor and a preparation method thereof. The low-impedance polyimide-based all-fiber structure flexible pressure sensor comprises electrode fiber layers and a dielectric fiber layer, the electrode fiber layers are arranged on the upper surface and the lower surface of the dielectric fiber layer respectively, and the electrode fiber layers and the dielectric fiber layer form gradient dielectric filler distribution; and the electrode fiber layer and the dielectric fiber layer are laminated fibers prepared by mixing a polyimide material, a dielectric filler and a spinning aid and then carrying out airflow spinning. The three-layer structure and the gradient dielectric filler content design are adopted, the excellent sensing performance can still be kept in the temperature range of-70 DEG C to 200 DEG C, and high response consistency is kept in high and low temperature environments.

A multi-beam system includes a light source configured to emit light; a fiber bundle connected to the light source; and a camera configured to capture an image set including images corresponding to each fiber connected to the light source. The fiber bundle includes a central fiber having one end connected to the light source, and N layers of fibers surrounding the central fiber. The first layer of fibers includes M fibers, each having one end connected to the light source, and the Nth layer of fibers includes more than M fibers, but only M fibers in the Nth layer of fibers have one end connected the light source. A processor is configured to determine a centroid of each image in the image set to produce a centroid map and generate a fiber location map comprising fiber locations of all fibers in the fiber bundle based on the centroid map.

The invention provides a discontinuous fiber reinforced composite material unit cell model rapid establishment method, and belongs to the technical field of composite material multi-scale computational mechanics. The problem that a coordinate transformation and fiber modeling method capable of accurately describing the fiber bending form and any three-dimensional orientation is lacked is solved. The method comprises the steps that the overall size, fiber distribution parameters and discrete unit size of a unit cell model are defined; generating specific distribution parameters of all fibers; discretizing the fibers according to the length of the fibers and the size of the discrete unit, and performing coordinate transformation and local bending rotation; segmenting and periodically translating the intersection point of each fiber and the periodic grid; writing the unit and node information of each fiber into a text file; importing a CAE (Computer Aided Engineering) for visualization; a matrix part is established, a fiber phase and a matrix phase are integrated, and a unit cell numerical model is obtained by assembling and dispersing matrix parts and embedding fibers into a matrix. The method is used in the fields of aerospace and automobile manufacturing.

A construction method of a fiber lining surface of an ethylene cracking furnace includes the following steps: S1, leveling the fiber lining surface; S2, wetting the leveled fiber lining surface; S3, rooting the wetted fiber lining surface; and S4, coating, before the fiber lining surface is dried, high-temperature paint to the fiber lining surface that has been rooted; and reserving multiple expansion sews on the fiber lining surface during the coating process. According to the construction method of the high-temperature paint for full fiber lining structure of the ethylene cracking furnace, the high-temperature paint is firmly bonded with the lining, and will not crack or fall off during use, protecting the full fiber lining by the coating and greatly extending the service life of the lining.

This invention discloses a high-voltage DC fully controlled solid-state switch control device, relating to the field of power electronic control technology. The device includes: a control unit configured to output a trigger control signal via a single control pin; a drive circuit including a control switch Q1 and multiple fiber optic transmitters U1 physically connected in series; a transmission branch composed of multiple series-connected fiber optic transmitters U1, connected in parallel with the control switch Q1 in a power supply circuit to synchronously control the extinction or emission states of all fiber optic transmitters U1 in the transmission branch; wherein, when the control switch Q1 experiences a short-circuit failure, or any fiber optic transmitter U1 experiences an open-circuit failure, all fiber optic transmitters U1 in the transmission branch synchronously enter an extinction state, thereby synchronously turning off multiple high-voltage power switching devices. This invention aims to reduce the number of high-voltage power supplies and solve the problem of rapid synchronous control and protection under multi-transistor parallel connection.

The utility model discloses a full fibre trolley type resistance furnace belongs to resistance furnace field, including furnace body, closed subassembly and drive mechanism are arranged at the top of furnace body respectively, and drive mechanism is connected with closed subassembly, drive mechanism is used for providing power for closed subassembly, and closed subassembly is used for closing at the furnace mouth place of furnace body, closed subassembly includes two settings in the top of furnace body's stand, rotatable through the stand's rotary bar, two respectively cover set in the outer wall of rotary bar's guide pulley, cover in the outer wall of guide pulley's tow rope, the utility model discloses a full fibre trolley type resistance furnace, compared with prior art, and the full fibre trolley type resistance furnace of this full fibre trolley type resistance furnace sets up wheel speed sensor real -time monitoring door board moving speed, cooperates power mechanism, expansion piece and elastic buffer piece, can trigger buffer mechanism in time when door board is too fast and goes down, effectively avoided the security hidden danger and equipment damage problem that traditional resistance furnace brought because furnace door rapid falling.

The invention belongs to the technical field of functional flexible materials, and particularly relates to an all-fiber porous low-impedance sensor of gradient dielectric filler and a preparation method of the all-fiber porous low-impedance sensor. The all-fiber porous low-impedance sensor is of an integrated structure formed by stacking at least three layers of dielectric fibers in the thickness direction, and gradient dielectric filler distribution is formed by the adjacent dielectric fibers. The gradient dielectric filler full-fiber porous structure with the ultrahigh porosity (the porosity is larger than 80%) is adopted, and low-impedance variable dielectric response is achieved through the synergistic effect of fiber lap joint and impedance regulation and control.

This utility model relates to the field of fiber optic distribution technology, specifically disclosing a fiber optic distribution frame, including a housing, a front door of the housing, a movable support, and fiber optic distribution units. The movable support is placed inside the housing, and each fiber optic distribution unit is placed side by side inside the movable support. Fixed plates are provided on the left and right sides of the movable support. At least two rubber blocks are provided on the side of the fixed plates away from the movable support. A rotary push device for adjusting the friction between the rubber blocks and the housing is provided between the fixed plates and the rubber blocks. The fiber optic distribution units are integrated on the movable support inside the housing. When replacing the fiber optic distribution units, if the view is obstructed, the fixation between the movable support and the housing can be released, and the movable support can be pulled out entirely from the housing, exposing all fiber optic distribution units on the outside of the housing. This allows personnel to maintain the fiber optic distribution units in an open environment, avoiding misoperation or component damage due to space constraints.

A fiber rotator system includes a clamp assembly and a fiber rotator assembly for aligning multiple optical fibers. The clamp assembly has a base with fiber channels, fiber clamps, and a guide assembly. The fiber rotator assembly includes a linear actuator and wheel clamps, each aligning with a fiber base channel. Each fiber clamp includes a jaw, connecting rod, spring, and handle, while each wheel clamp includes a linear actuator contactor, wheel jaw, fiber channel rod, and wheel guide. A fiber detection and alignment system analyzes fiber end faces and provides alignment data to a fiber rotator controller. In operation, each wheel clamp contacts and rotates with the linear actuator. The fiber rotator controller selectively engages and disengages the fiber clamps and wheel clamps to iteratively rotate and secure fibers until all fibers are aligned. The system scalably automates alignment of multiple polarization maintaining (PM) fibers with high precision.

The invention relates to an optical cable polling detection device and system and an optical cable polling detection method. The optical cable polling detection device comprises a first detection unit which outputs detection light to carry out polling detection on all fiber cores in a group of fiber cores when no abnormity is detected; when an abnormality is detected, only the fiber core which detects an abnormal signal is detected; the second detection unit is used for outputting detection light to carry out polling detection on all fiber cores in the other group of fiber cores when the abnormity is not detected; when the abnormal signal is detected, only the fiber core in which the abnormal signal is detected is detected; the first detection unit is respectively connected with all the core fibers through the optical change-over switches, and the second detection unit is respectively connected with all the core fibers through the optical change-over switches; and the control part is connected with the first detection unit and the second detection unit for control, and the control part is respectively connected with the light change-over switch and controls the on-off of the light change-over switch.

The application discloses a kind of microseismic positioning methods based on fiber grating acoustic emission sensing technology, comprising: (a) at least four monitoring points are selected in the underground mine to be measured, and a fiber grating acoustic emission sensor is arranged at each monitoring point, and four fiber gratings are equidistantly arranged on the fiber grating acoustic emission sensor;(b) the propagation velocity of acoustic emission signals on the path from all fiber grating acoustic emission sensors to the source is solved;(c) the coordinate data of each fiber grating acoustic emission sensor and the time data of receiving acoustic emission signals are processed to obtain corresponding data on the corresponding monitoring point;(d) the propagation velocity obtained by calculation, the coordinate data of monitoring point and the time data of receiving acoustic emission signals are substituted into the source calculation equation set to obtain the coordinates of the source.The application can accurately locate the source in the underground mine, can provide reliable technical guidance for taking targeted reinforcement and other measures, and ensure the safe production and mining of underground mine.

The present invention discloses a method for establishing a composite material RVE model taking into account fiber dislocation, which relates to the technical field of composite materials and three-dimensional modeling. The method generates cross sections of multiple fibers in a two-dimensional RVE region and records the coordinates of the center points of the fibers. According to the center point of each fiber in the two-dimensional RVE region, a corresponding number of center control points are generated for each fiber along the Z-axis direction. The center control points of each fiber are fitted into a curve to obtain a distribution trajectory of the fiber along the Z-axis direction, which is recorded as the center point path of the fiber. According to the cross section of the fiber, a sweep operation is performed along the center point path of each fiber to generate a three-dimensional entity of all fibers, and the entity is assembled with a matrix to form a three-dimensional RVE model. The present invention makes up for the deficiency of existing composite material RVE modeling methods that can only generate straight fibers. The three-dimensional RVE model established by this method is more consistent with the actual composite material structural characteristics.

The application discloses a kind of astronaut special-shaped member arbitrary toughening phase intelligent modeling method, belong to the intersection technical field of computer graphics of calculation simulation;The application is first input to obtain point cloud data set with the face node coordinates in complex special-shaped member, decomposition obtains mid-plane centroid and three partial vectors, project point cloud to local plane and calculate its range and center;Scale curve and rotate translation to the local plane center, after 3D plane mapping, nearest neighbor algorithm projection mapping to point cloud, equal arc length sampling obtains multiple control points;Based on control point file generates multiple fiber objects, by calculating the shortest distance of model node and fiber axis and cross section level set value, identify fiber unit, boundary unit and matrix unit;Boundary unit is again segmented and re-identified unit, after all fiber object determination is completed in cycle, traverse fiber unit and calculate its axial tangent vector, complete modeling;The application can quickly realize the digitization modeling of high-end complex toughening component.

The invention relates to a simulation model parameter determination method and system for a composite material. The method comprises the following steps: determining at least two fiber arrangement directions on the basis of layering structure parameters of a composite material, and obtaining test curve data of samples corresponding to all the fiber arrangement directions under three test types; determining test material parameters of the composite material based on the test curve data, constructing a simulation model based on the layering structure parameters, the structure parameters of all the samples and the test material parameters, and determining simulation curve data of the simulation model under various test types; determining a test simulation error based on the test curve data, the simulation curve data and a preset objective function, and updating the test material parameter based on the test simulation error to obtain a simulation model parameter corresponding to the minimum test simulation error, the prediction capability, the reliability and the parameter calibration efficiency of the simulation model on the real mechanical behavior of the material are remarkably improved, and the influence on the safety evaluation result of the whole vehicle can be avoided.

The application discloses a vertical bright annealing furnace with full-fiber structure and relates to the technical field of vertical bright annealing furnaces.The vertical bright annealing furnace comprises a base, an input channel, a furnace body, a polycrystalline alumina fiber layer, a cooling section, an output roller shaft support, stainless steel strips, an air inlet pump, an atmosphere pipe, a circulating assembly, a leveling assembly, a supporting assembly and a pretreatment assembly.The application can continuously change the conduction force of the abutting ring sleeve to the fixed shaft when the electric push rod drives the moving rod to reciprocate, so that the conduction force of the middle part of the abutting ring sleeve to the fixed shaft is prevented from being in the same position for a long time to cause deformation damage to the fixed shaft, and meanwhile, the jet pipe can continuously spray dry high-temperature gas on the surface of the stainless steel strips when the electric push rod works, so that the surface water of the stainless steel strips can be effectively removed, and the surface dust and impurities can be carried away.

The disclosed ultra-high power all fiber laser system is configured with multiple spaced apart fiber lasers outputting respective laser beams respective paths. The disclosed system is further configured with a tapered fiber-bundle including at least one central guiding fiber and a plurality of peripheral guiding fibers. The disclosed system further has a multicore delivery fiber provided with at least two concentric and radially spaced apart central and peripheral cores. The peripheral core is coupled to the peripheral guiding fibers while the central core is spliced to the central guiding fiber so that a system outputs beams emitted from respective central and peripheral core of the delivery fiber having a different beam shape from the system output emitted from the outer core.

The application discloses a kind of ceramic matrix composite ultrasonic milling amplitude parameter determination method, belongs to composite material processing technical field, it is characterized in that, including the following steps: a, according to the fracture mode of fiber in macroscopic brittle fracture domain, fiber orientation angle is divided into three intervals;B, three fiber orientation angle intervals are proposed micro-macro brittle fracture transition critical criterion;C, the critical depth of three fiber orientation angle intervals is calculated respectively by selecting corresponding critical depth model;D, according to the critical depth of all fiber orientation angles, select minimum value as the amplitude value of ceramic matrix composite ultrasonic vibration assisted face milling.The minimum value of the calculated all fiber orientation angle micro-macro brittle fracture transition critical depth is used as the amplitude value of ceramic matrix composite ultrasonic vibration assisted face milling, and is used for ceramic matrix composite ultrasonic vibration assisted processing, which greatly reduces the machined surface roughness of ceramic matrix composite.

A method and system for transmitting an optical signal. One or more first and second multi-core optical components are coupled to all of the fiber cores in the multi-core fiber. Erbium-doped fiber amplifier (EDFA) optics are coupled to all fiber cores in the multi-core fiber and include a plurality of EDFAs. Each optical fiber core is coupled to the EDFA. The EDFA optical component is coupled to all optical fiber cores between the first and second multi-core optical components. The first multi-core component is coupled at an input of a first portion of the fiber core and provides a first function, and coupled at an output from a second portion of the fiber core and provides a second function. A second multi-core component is coupled from the output of the first portion of the fiber core and provides a second function, and coupled to the input of the second portion of the fiber core and provides the first function.

The invention relates to the technical field of die forging, in particular to a titanium alloy reducing pipe all-fiber die forging method. A titanium alloy reducing pipe all-fiber die forging method comprises a titanium alloy reducing pipe and a reducing pipe die, and is characterized in that the specific die forging method comprises the following steps that S1, the titanium alloy reducing pipe conforming to the process size is placed into the special reducing pipe die; s2, performing an upsetting process; s3, after upsetting is completed, a punching process is carried out; s4, after punching is completed, a broaching process is carried out; and S5, after broaching is completed, an integrally-formed forge piece is forged. Compared with the prior art, the all-fiber die forging method for the titanium alloy reducing pipe is provided, a precision die forging integrated forming mode is adopted for forging, the performance is improved by changing the forging mode and reserving the whole metal streamline, and the strength of the titanium alloy reducing pipe is improved in the forging process.