107 results about "Stress reduction" patented technology

According to the method for reducing the quenching residual stress of the large 7xxx aluminum alloy T-shaped section long beam type forge piece, a cold pressing die which moves up and down in traditional cold pressing deformation is changed into a rolling die, so that surface contact between the die and the forge piece is changed into line contact, the load on equipment is greatly reduced, and the service life of the forge piece is prolonged. And the phenomena of uneven stress reduction and the like caused by segmented cold pressing of long beam forgings are also avoided. And meanwhile, through the structural design of the upper roller mold cavity, the forge piece is in a multidirectional pressed state in the cold deformation treatment process, reduction of residual stress of the forge piece is facilitated, and uniform distribution of the residual stress is promoted. Under the control of technological parameters, the cold deformation die has little influence on the organization structure and mechanical property of the forge piece, the residual stress eliminating effect is good, deformation of the 7xxx aluminum alloy T-shaped section long beam type forge piece in the machining process can be effectively reduced, and the part yield is improved.

The invention discloses a porcelain piece stress reduction method and system based on elasticity modulus regulation and control, and belongs to the technical field of stress research and nondestructive testing, and the method comprises the following steps: generating a temperature-elasticity modulus characteristic curve, collecting geometrical morphology information of microdefects in a porcelain piece, and calculating a temperature-elasticity modulus characteristic curve; inputting a multi-physics field coupling finite element model taking a temperature change process of an extreme low-temperature working condition as a thermal load boundary condition, carrying out iterative optimization calculation to obtain an optimal elastic modulus combination which minimizes the maximum first principal stress in the porcelain part, and reversely solving an optimal manufacturing process parameter combination by utilizing a correlation model to obtain a final manufacturing process parameter combination. And calculating the predicted safe operation life cycle of the porcelain part through the fatigue crack propagation model. According to the method, by introducing dynamically changing material parameters and real microdefect data, the stress state of the porcelain piece under the extreme working condition is predicted and optimized, a corresponding process implementation path and service life evaluation are given, and the problems of inaccurate simulation and poor optimization effect caused by adoption of constant parameters in the prior art are solved.

Methods for forming a back-end-of-line (BEOL) passive device structure are provided. A method according to the present disclosure includes depositing a first conductor layer over a substrate, patterning the first conductor layer to form a patterned first conductor layer, depositing a first insulation layer over the patterned first conductor layer, depositing a second conductor layer over the first insulation layer, patterning the second conductor layer to form a patterned second conductor layer, depositing a second insulation layer over the patterned second conductor layer, depositing a third conductor layer over the second insulation layer, and patterning the third conductor layer to form a patterned third conductor layer. The patterning of the first conductor layer includes removing a right-angle edge of the first conductor layer.

The application discloses a high-performance motor rotor core, comprising rotor laminations, wherein a plurality of magnetic steel slot groups are arranged on the rotor laminations in a circumferential direction; the application has simple structure and reasonable design; stress reduction structures with central symmetry characteristics are arranged to effectively guide and release main radial stress in the magnetic bridge area, optimize stress distribution, avoid fatigue cracks caused by local stress concentration, improve fatigue life and structural safety margin of the magnetic bridge, and improve NVH performance, reduce electromagnetic harmonics, and improve stability and quietness of motor operation; in addition, the overall magnetic steel slot layout is optimized to realize reasonable reduction of material use and lightweight design of the rotor core, and improve power density and dynamic response capability under the premise of guaranteeing electromagnetic performance.

A device structure may be manufactured by forming metal interconnect structures embedded in dielectric material layers over a substrate; forming active metal connection structures, primary dummy metal structures, and miniature dummy metal structures over a topmost dielectric material layer selected from the dielectric material layers, wherein the miniature dummy metal structures have a lesser height than the active metal connection structures and the primary dummy metal structures; and forming bonding pads over the active metal connection structures, the primary dummy metal structures, and the miniature dummy metal structures, wherein the active metal connection structures and the primary dummy metal structures are contacted by the bonding pads, and the miniature dummy metal structures are not contacted by any of the bonding pads.

The invention relates to the technical field of pressure vessel manufacturing, and discloses a spherical tank welding stress reduction process with coupling preheating and interlayer temperature control, which comprises the following steps: preheating a to-be-welded area of a spherical shell plate before welding; multi-layer and multi-pass welding is conducted through a small heat input welding method, in the welding process, self-adaptive heat input control is executed based on geometrical characteristics of a standard linear area, a T-shaped intersection area and the like of a weld joint path, and meanwhile the interlayer temperature between all welding passes is strictly controlled; a symmetric welding method and a segmented back welding method are adopted to balance deformation; and finally, a tempering welding bead with low linear energy is welded on the cover surface layer. According to the method, through in-situ, zoning and multi-stage coordinated regulation and control of welding heat input, formation of hard and brittle structures is effectively restrained, the performance of a heat affected zone is optimized, the residual stress peak value of a welding joint, especially a geometric discontinuous region, is remarkably reduced, and the process does not need overall heat treatment after welding, so that the production cost is reduced. The manufacturing period is shortened; and the production cost is reduced.

A cutting insert for a modular rotary cutting tool is disclosed. The cutting insert may include a shaft, an opposing insert centering surface, and a convex torque transmitting insert driving surface.

The application relates to a device and a method for regulating residual stress of propellant solidification, which comprises a base, a die cylinder arranged above the base, a plurality of stress reduction devices arranged on the outer cylinder wall of the die cylinder along the axial direction of the die cylinder, each stress reduction device comprising a plurality of stress reduction devices uniformly distributed along the circumferential direction of the outer cylinder wall of the die cylinder, each stress reduction device comprising a high-energy acoustic beam transducer and a wedge connected with the emitting end of the high-energy acoustic beam transducer, the end of the wedge away from the high-energy acoustic beam transducer being close to the outer cylinder wall of the die cylinder, a supporting mechanism arranged below the base and provided with a cavity, and a high-energy acoustic beam transducer installed below the base and located in the cavity of the supporting mechanism, the emitting end of the high-energy acoustic beam transducer being connected with a screw rod, and the top of the screw rod extending into a counterbore below the bottom of the die cylinder. The application is suitable for reducing residual stress of propellant.

A device structure may be provided by: forming semiconductor devices and metal interconnect structures formed within dielectric material layers over a semiconductor substrate; forming metal pads in a topmost layer of the dielectric material layers; forming a passivation layer stack including a first dielectric diffusion barrier layer, a silicate glass layer, a second dielectric diffusion barrier layer, and a polymer layer; forming openings through the passivation layer stack over the metal pads; forming die bump structures on the metal pads; and dicing a wafer including the passivation layer stack, the dielectric material layers, and the semiconductor substrate along dicing channels into a plurality of semiconductor dies.

A method performed by a computing system that facilitates formation of an object comprises receiving manufacturing process data associated with an object to be formed via a drape-forming operation. The computing system receives a parametric model of the object. The parametric model facilitates specification of a radius of a fillet within a region associated with the object. The computing system determines, based on the parametric model of the object, a unit vector field associated with a surface of the object and the manufacturing process data. The computing system adjusts the radius of the fillet of the parametric model within the region to reduce an average divergence of the vector field to a minimum amount, and communicates output data associated with an adjusted parametric model to equipment configured to form a mandrel that facilitates formation of the object.

The invention discloses a structure and process method for reducing casting thermal stress of a large U-shaped piece, and belongs to the technical field of casting thermal stress reduction, the structure comprises the U-shaped piece composed of a bottom plate, two lug plates, an inner side rib and an outer side rib, and further comprises a hand-in-hand process structure arranged between the two lug plates on the U-shaped piece; the hand-in-hand process structure comprises four small lug plates and two process ribs; the four small lug plates are respectively arranged on the two lug plates, and two small lug plates are correspondingly arranged on each lug plate; the two process ribs are respectively connected with the opposite small lug plates on the two lug plates; and the small lug plates and the process ribs are both of temporary structures and are cut off after the U-shaped part is subjected to heat treatment. According to the structure and the technological method for reducing the casting thermal stress of the large U-shaped part, the problems that in the prior art, the casting thermal stress in the U-shaped part and the casting residual stress of a special part are too large can be effectively solved.

The application discloses a kind of based on numerical simulation's silicon nitride sintering process parameter optimization method, including the following steps: to photo-curing 3D printing silicon nitride ceramic is successively implemented and sintered experiment is debound, micro characterization is carried out to the ceramic after sintering, and second characterization result is obtained;Establish the viscoelastic constitutive equation of silicon nitride ceramic sintering shrinkage deformation, based on the viscoelastic constitutive equation in Abaqus Sintering finite element model is constructed, to obtain the simulation result of transient temperature field and the simulation result of sintering shrinkage deformation;Second characterization result is corrected to finite element model, and verified finite element model is obtained;According to verified finite element model, the original sintering process curve is optimized, and the sintering process curve with the lowest cost and the greatest influence on sintering stress reduction is selected as the optimal sintering process, to realize the optimization of sintering process.The sintering process parameter optimization method not only reduces the cost, but also shortens the experimental period, and the production efficiency is high.

The present application discloses a forming method for a wind turbine blade, and a wind turbine blade. The forming method for a wind turbine blade comprises: performing stress reduction treatment on a target edge of a fiber fabric, wherein the stress reduction treatment comprises thickness reduction treatment and / or fiber continuity cutting treatment; laying the fiber fabric in a skin mold in a target direction to form a staggered-configuration fiber fabric layer; injecting resin and performing curing to form a skin; and bonding the skin and other blade components to a blade body to form a wind turbine blade. The present application solves the problem in the prior art of larger stress concentration of a wind turbine blade.

Devices, systems, and methods are provided for effecting person decompression and / or other health beneficial effects by controlling one or more attributes of illumination observed by a person, such as color (or wavelength) and / or intensity. Apparatuses or systems provided herein may include area lighting (e.g., for a room, a portion of a room, a vehicle) and / or specific devices (e.g., medical instruments and devices). During operation, the lighting fixture or other light source outputs light in a selected range of the visible spectrum, such as the amber range (e.g., 570-680 nm), the red range (e.g., above 680 nm), and the green range (e.g., 510-540 nm), while avoiding other ranges (e.g., below 510 nm). The light emitted by the system or device may occupy part, most or all of the radiation flux touched by the person, and the decompression effect can be verified by biological or biological recognition detection.

This utility model relates to a silicon carbide crystal boat, comprising two end plates arranged opposite each other, and a grooved bar disposed between the end plates. Each end plate is composed of region A, region B, and region C. Region A has two evenly spaced circular holes. A foolproof hole is located at the center of the lower edge of region C of one end plate. Regions B and C each have three circular holes. A handle is also provided on the outer side of region B of the end plate. The diameter of the circular holes is 20-35 mm. This silicon carbide crystal boat is a complex structural component formed integrally and then perforated. Through innovative end plate partitioning and optimized circular hole topology, thermal stress reduction is achieved, providing a core guarantee for the long lifespan and low defect rate operation of the silicon carbide crystal boat in high-temperature semiconductor processes.

The utility model discloses an adjustable skin stitching instrument which comprises an attachment plate, two symmetrically-arranged mounting plates are arranged on one side of the attachment plate, and the first mode is that the mounting plate on one side is provided with a plurality of single-body lock catches or double-body lock catches, and the mounting plate on the other side is provided with a plurality of double-body bases or single-body bases; according to the second mode, the mounting plates on the two sides are provided with a plurality of single lock catches or double-body lock catches and the double-body base or the single base in a crossed mode; the base is connected with a pull rod, a plurality of locking rings are arranged on the side wall of the pull rod, a cavity is formed in the lock catch, and a locking block is arranged in the cavity. According to the coral island lagoon face traction device, the combined structure of the double-body lock catch or the single-body lock catch, the single-body base or the double-body base, the mounting plate, the pull rod and the like is arranged, so that a coral island reef'ring reef lagoon face '-shaped combined traction range can be formed at the wound of a patient, and a U-shaped traction range is formed between the double-body lock catch or the double-body base; stress can be reduced during transverse closing and longitudinal extending of the incision, and healing of the incision is promoted.

The present invention provides systems and methods for management and orchestration of a fleet of remote Internet-of-Things (IoT) devices. The present invention includes a platform for onboarding, provisioning, and managing remote IoT devices throughout their lifetime. The platform includes portals for manufacturers, vendors, and consumers to access device data and sensor data collected by the devices. The data collected by the portal is used to control the fleet of remote IoT devices as well as make recommendations, e.g., for sleep promotion and stress reduction.

The application discloses a high-altitude steel structure welding deformation pre-control and stress release construction method, belongs to the technical field of welding construction, and aims to solve the problems of low control precision of high-altitude welding deformation and stress release lag. The method arranges sensors on the structure, calibrates the current dynamic welding twin model by using the trial welding data, divides the weld, plans welding according to the model, and instantly identifies the stress concentration area as the intervention target area, and then implements online stress reduction by the following ultrasonic impact device; then, the model is iteratively updated based on the data collected in the whole process to guide the subsequent segmentation; finally, the target processing is performed on the measured residual stress exceeding area. The method is mainly used for high-altitude steel structure welding construction, and realizes the precise active control of deformation and stress.

Disclosed herein are bacterial compositions and methods for treating neurological disorders, improving brain function, and reducing stress.

The invention discloses a self-adaptive stress release workbench for restraining deformation of a laser cutting plate, and relates to the field of laser cutting machining, the self-adaptive stress release workbench comprises a rack, a plate clamping frame, a workpiece receiving assembly and a self-adaptive supporting assembly, the plate clamping frame is slidably connected to the rack through a first rail, and the workpiece receiving assembly is slidably connected to the rack through a second rail; the workpiece receiving assembly is slidably connected to the middle of the rack through a second rail and located below the plate clamping frame, the self-adaptive supporting assembly is arranged on the rack in a liftable mode, and the working end of the self-adaptive supporting assembly makes contact with the bottom of a plate clamped and fixed to the plate clamping frame. The working end of the self-adaptive supporting assembly can respond to the stress change in the plate in the cutting process of the plate to generate multidirectional micro displacement, so that dynamic supporting and stress reduction of the plate are achieved. In the cutting process, the internal stress of the plate can be responded and reduced in real time through the dynamic supporting system, and meanwhile precise cooperative control over the supporting assembly and the workpiece receiving system is achieved.

The application discloses a high-altitude steel structure welding deformation pre-control and stress release construction method, belongs to the technical field of welding construction, and aims to solve the problems of low control precision of high-altitude welding deformation and stress release lag. The method arranges sensors on the structure, calibrates the current dynamic welding twin model by using the trial welding data, divides the weld, plans welding according to the model, and instantly identifies the stress concentration area as the intervention target area, and then implements online stress reduction by the following ultrasonic impact device; then, the model is iteratively updated based on the data collected in the whole process to guide the subsequent segmentation; finally, the target processing is performed on the measured residual stress exceeding area. The method is mainly used for high-altitude steel structure welding construction, and realizes the precise active control of deformation and stress.

Systems, devices and methods are provided for stimulating one or more cranial nerve(s) of a user. The systems and methods combine an electrical stimulation signal with an audio signal, such as music, white noise, ambient sound, filtered music, and the like. The combination of the nerve stimulation and the audio signal may be specifically designed to treat various diseases or disorders and / or for non-medical purposes, such as improving the general well-being of the user, reducing stress and the like. In certain embodiments, the electrical impulses comprise a burst stimulation and a tonic stimulation. The burst stimulation may comprise a burst of pulses. The bursts and / or the pulses may have frequencies that vary throughout the duration of the treatment.

This invention discloses a method for excavating and withdrawing roadways and equipment before a mining cessation line, comprising the following steps: (1) determining the range of the stress reduction zone caused by advanced mining; (2) supporting the area affected by advanced mining; (3) excavating roadways, excavating transfer chambers, and chamfering corners; (4) supporting the withdrawal space; and (5) withdrawing equipment. This invention provides a method for excavating and withdrawing a roadway on-site before a mining cessation line based on the advanced support stress curve, achieving a synergistic effect between the roadway excavation and support shielding.

The utility model relates to the technical field of breathing machines, in particular to a breathing machine mask capable of preventing pressure injury of instruments. The utility model provides a respirator mask capable of preventing pressure injury of instruments. The respirator mask comprises a mask body, a silica gel plate and a pressure reduction patch, the silica gel plate is provided with a first face and a second face which are parallel to each other, the first face of the silica gel plate is attached to the mask body, and the pressure reduction paste is bonded to the second face of the silica gel plate; the silica gel plate comprises a first silica gel plate and a second silica gel plate, the first silica gel plate is arranged on the inner wall of the mask body, and the second silica gel plate is arranged at the edge of the mask body. The pressure reduction patches on the first silica gel plate and the second silica gel plate are attached to the face of a user, so that the effects of helping the user to relieve pressure, relieving muscular tension and promoting blood circulation are achieved, the second silica gel plate located on the edge of the mask body can achieve a good buffering effect, and the pressure of the mask on the face of the user is relieved.

The invention discloses a clinical ultrasonic probe fixing and doctor neck, elbow and wrist stress burden reducing device, and relates to the technical field of burden reducing devices in the biomedical engineering industry. The clinical ultrasonic probe fixing and doctor neck, elbow and wrist stress reducing device comprises a first mounting plate, the top of the first mounting plate is connected with a lifting rod through a lifting mechanism, the top of the lifting rod is rotationally connected with a neck bracket through a rotating shaft, and the side wall of the first mounting plate is fixedly connected with a second mounting plate; and the top of the second mounting plate is connected with a first adjusting rod through a first universal adjusting mechanism. According to the clinical ultrasonic probe fixing and doctor neck, elbow and wrist stress reducing device, during ultrasonic detection, the neck, elbow and wrist stress of a doctor can be reduced conveniently, meanwhile, it can be guaranteed that an ultrasonic probe body can abut against a detection part all the time, it is guaranteed that pressure is constant, the doctor does not need to conduct extrusion with force all the time, and the effect of reducing the stress is achieved; the labor intensity is reduced.

A method, computer system, and a computer program product are provided for managing occupational workload. Information is obtained about an occupational workload that includes one or more tasks. The features of the occupational workload including the tasks are extracted. A task performer is assigned to each task. A stress level is calculated for each task performer assigned to each task. The stress level is compared against a preselected value. An alert is generated when the calculated level exceeds the preselected value. The occupational workload is rebalanced when any alert is generated. The rebalancing can include at least one of reassigning a new task performer to one or more tasks, increasing a time allocated for completing each task or increasing number of task performers allocated to complete each task.

A golf club head having a thin-walled face, a thick-walled central region, and a thick peripheral region is further improved by removing unnecessary weight from the peripheral edge of the striking face and localizing the thickened peripheral region only at optimized locations that can benefit from such features.SOLUTION: The striking face 202 is comprised of a thickened central region 214 located near the geometric center of the striking face portion, a central transition region 216 extending radially outward from the thickened central region, a thinned intermediate region 218 extending radially outward from the central transition region, a thickened stress reducing region 220 extending radially outward from the thinned intermediate region, and a thinned peripheral region 222 extending radially outward from the thickened stress reducing region, all of which combine to form an improved striking face.SELECTED DRAWING: Figure 2

Procedure, comprehensive: Connecting a first IC component and a second IC component with an interposer using dielectric-to-dielectric bonds and metal-to-metal bonds; Forming a stress-reducing material around the first IC component and the second IC component, wherein the stress-reducing material has a first Young's modulus; Encapsulating the stress-reducing material, the first IC component, and the second IC component with a molding material, wherein the molding material has a second Young's modulus, the first Young's modulus being smaller than the second Young's modulus; and Thinning the molding material to expose the first IC component and the second IC component, wherein the stress reduction material has first filler materials with a first average filler particle size and the molding material has second filler materials with a second average filler particle size, wherein the first average filler particle size is smaller than the second average filler particle size.

Gate fabrication techniques are disclosed herein for providing gate stacks and / or gate structures (e.g., high-k / metal gates) with improved profiles (e.g., minimal to no warping, bending, bowing, and necking and / or substantially vertical sidewalls), which may be implemented in various device types. For example, gate fabrication techniques disclosed herein provide gate stacks with stress-treated glue layers having a residual stress that is less than about 1.0 gigapascals (GPa) (e.g., about −2.5 GPa to about 0.8 GPa). In some embodiments, a stress-treated glue layer is provided by depositing a glue layer over a work function layer and performing a stress reduction treatment, such as an ion implantation process and / or an annealing process in a gas ambient, on the glue layer. In some embodiments, a stress-treated glue layer is provided by forming at least one glue sublayer / metal layer pair over a work function layer, performing a poisoning process, and forming a glue sublayer over the pair.

This invention discloses a method and apparatus for residual stress release in epoxy composite insulation components. The method involves preparing an epoxy sample with bidirectional strain gauges, subjecting it to multi-stage thermal cycling treatment, recording strain data to determine the optimal combination of treatment parameters (temperature, holding time, cooling rate, and number of cycles), and then applying this optimal parameter combination to the epoxy composite insulation component for stress reduction. The apparatus includes a programmable oven, a strain gauge, and a host computer. This invention is simple to operate, low in cost, and through multi-scale collaborative optimization, can significantly reduce the residual stress in currently commercially available epoxy composite insulation components, significantly improving the reliability of epoxy composite insulation components used in ultra-high voltage / extra-high voltage power equipment, and has broad engineering application prospects.