1214 results about "Composite beams" patented technology

An apparatus, method, or system of lighting units comprising a plurality of lighting elements, such as one or more LEDs, each element having an associated optic which is individually positionable. In embodiments of the present invention, one or more optics are developed using optimization techniques that allow for lighting different target areas in an effective manner by rotating or otherwise positioning the reflectors, refractive lenses, TIR lenses, or other lens types to create a composite beam. The apparatus, method, or system of lighting herein makes it possible to widely vary the types of beams from an available fixture using a small number of inventoried optics and fixtures. In some cases, by using a combination of individual beam patterns, a small set of individual optics would be sufficient to create a majority of the typical and specialized composite beams needed to meet the needs of most lighting projects and target areas.

A lightweight wind turbine blade formed with a truss support structure assembly of composite truss joints including composite spar and cross members attached to and supporting in spaced relation a spine of lightweight rib panels. The rib panels are oriented in parallel spaced relation from one another and individually molded with perimeters defining individual areas of curvature for the finished blade assembly. The truss support structure is covered with a lightweight fiberglass or hardened fabric skin attached to and fitted on respective rib panel edges forming an airfoil structure.

A ribbed metal plate for a composite slab that includes a substantially planar plate having an upper surface and a lower surface and a plurality of laterally-spaced, longitudinally-extending ribs that have a keystone profile and wherein the sidewalls are angled toward each other. Ends of the ribs are integrally formed. The rib plate is secured to bearing walls in a structure and concrete is poured on the ribs to form a composite deck. The ends of the ribs extend in the lateral direction to form a composite structure retarding movement of cured concrete in a longitudinal direction. The ribbed plate can also be used in composite beams.

An exposure apparatus for use in optical lithography can include a holder and a plurality of UV-LED modules carried by the holder and disposed in an array. A respective plurality of collimating lenses can be disposed in an array corresponding to the array of UV-LED modules. The plurality of UV-LED modules and the respective plurality of collimating lenses can provide a respective plurality of distinct beams of UV light. The plurality of collimating lenses may be spaced from the plurality of UV-LED modules and spaced from the exposure plane and have an optical configuration providing a composite beam of UV light formed from the plurality of distinct beams of UV light in which each beam inside the periphery of the array overlaps each adjacent beam by at least 70% at the exposure plane. A method for directing light onto an exposure plane in an optical lithography procedure is provided.

An apparatus is comprised of a light source radiating into a peripheral forward solid angle and a center forward solid angle. A reflector is positioned to reflect light from the light source from the peripheral forward solid angle into a longitudinal beam about an optical axis of the reflector. A lens is disposed longitudinally forward of the light source for focusing light into a predetermined beam pattern from the center forward solid angle into a skewed beam in a skewed direction with respect to the optical axis of the reflector to project a composite beam of light comprised of the light radiated in the skewed beam and the longitudinal beam.

Two pulsed lasers (14) or sets of lasers propagate beams of pulses (20) having orthogonally related polarization states. A beam combiner (24) combines the orthogonal beams to form a combined beam propagating along a common beam path (16) to intersect an optical modulator (30) that selectively changes the polarization state of selected pulses of either beam to provide a composite beam (18) including similarly polarized pulses from the orthogonal beams. The composite polarized beam has a composite average power and a composite repetition rate that are greater than those provided by either laser. The optical modulator can also selectively control the polarization states of pulses from either laser to pass through or be blocked by a downstream polarizer (32). Additional modulators may facilitate pulse shaping of the pulses. The system is scalable by addition of sets of single lasers or pairs of lasers with beam combiners and modulators.

Disclosed herein are apparatus, method, and system for producing a customizable composite beam from a plurality of solid state light sources. Each light source is associated with individually adjustable fixture components which allow for a variety of lighting needs to be addressed. The composite beam is a collective of the beam projected from each adjustable component/light source combination; each individual beam being of customized shape or standard shape.

The invention discloses a steel-concrete composite beam adopting a corrugated steel web, which relates to a corrugated steel web composite beam capable of being applicable to highway bridges and railway bridges. The beam comprises a top flange concrete composite plate, a corrugated steel web plate, a top flange steel plate, a box beam bottom plate and male pin connecting pieces, wherein the top flange comprises a precast concrete slab and a cast-in-place concrete layer; and the top flange concrete composite plate is connected with the top flange steel plate into a whole through the male pin connecting pieces welded on the top flange steel plate. By adopting the structure, the problems that the site workload and the construction difficulty for casting a bottom flange concrete slab of a traditional corrugated steel web composite beam are large, the construction quality is difficult to guarantee and the like are overcome on the premise that the quantity of steel is hardly increased, meanwhile, the tensile property of the steel plate is fully played, the bearing capacity, the rigidity and the cracking resistance of the structure are improved, and the durability of the structure is improved, therefore, the corrugated steel web composite beam has the advantages of simple structure, reasonable stress, quick and convenient construction, and good technical and economic benefits.

The invention discloses a dynamic and static mechanics comprehensive test bench, which relates to mechanics experimental equipment. Nowadays the mechanics test bench in the market has the disadvantages of single function, inconvenient operation, big size of the equipment and high price. A pure beam bending device, a composite beam bending device, a cylinder crankling device, a dynamic beam device, an equal strengthen beam device, a stretching and compressing device and a sinker rod are arranged on a main bench frame; the pure beam bending device, the composite beam bending device, the equal strengthen beam device, the cylinder crankling device and the stretching and compressing device respectively adopt a hand operated helical wheel to load, a sensor to measure the power, and transfer a load through a combined type lever power transmission system; the dynamic beam device uses a motor with an eccentric wheel to vibrate hardly; an interface board which is connected with the lead wire of a strain meter is arranged on the bench surface. The invention has the functions of combining and arranging various experiments of the basic mechanics and skill training of various basic experiments. The invention has the advantages that the comprehensive function is powerful, the cost performance ratio is high, the structure is compact, and the operation is convenient.

The invention discloses a mixed steel-concrete composite frame structure, belonging to the technical field of engineering structure. The frame structure comprises a composite column of reinforced special shaped steep pipe concrete, a composite beam of concrete-steel pipe partially filled lightweight aggregate concrete and a reinforced concrete floor; wherein, the composite column of reinforced special shaped steep pipe concrete comprises a steel pipe of a special shaped column, a longitudinal bar of the column, stirrup of the column, concrete outside the steel pipe of the column and core concrete inside the steel pipe of the column; the composite beam of concrete-steel pipe partially filled lightweight aggregate concrete comprises a steel pipe of the beam, an inner separator, a longitudinal bar of the beam, stirrup of the beam and concrete outside the steel pipe of the beam; the space formed by the steel pipes of the beam, which are positioned on the lower part of the steel pipe at the end of the beam and on the upper part of the steel pipe on the midspan of beam, and the inner separator is filled with the core lightweight aggregate concrete in the steel pipe of the beam. The frame structure of the invention has excellent fire and shock resistance and relatively light dead load, can be used in building structures such as residence and is convenient for effective use of building space.

Composite beam with integrated rupture initiator and aircraft fuselage including such beams. A composite beam (18) comprises a web (20) with a sinusoidal-shaped section and a bottom flange (22). The web (20) comprises a stack of at least one central layer of single-directional carbon fibres oriented along the depth of the beam, and aramide fibre and carbon fibre fabrics. The lower part of the beam (18) is designed so that rupture is initiated in it if the aircraft in which the beam is installed crashes. This is achieved by gluing the bottom flange (22) on the sides of the web (20), the bottom edge of each layer of single-directional carbon fibres is setback from the corresponding edges of the fabrics and saw-tooth cut-outs are formed in this bottom edge

A modular reinforced structural beam and connecting member system that includes at least one composite beam having two oppositely oriented triangular closed head portions and a transversally extending web interposed between said two closed head portions, each of said beams consisting of two separate members arranged such that corresponding head portions of said two members are nested one within the other and adjacent elements of the two members are in mutual stabilizing contact. A plurality of connecting members are connected to, and are in force transmitting contact with, one of the composite beams and another structural element.

The invention relates to a corrugated web plate H-shaped profile steel composite bean, belonging to the technical field of building profile materials . The cross section port type comprises a corrugated web plate and an upper and lower flange joints. The upper flange is in parallel with the lower flange; the web plate is vertical to the upper flange and the lower flange; the web plate is connected with the flanges by single-sided fillet weld; the web plate is a trapezoid ripple or a sine curve ripple, wherein the lengthwise direction of the trapezoid ripple is repeated periodically. The upper part of a composite beam is a reinforced concrete swing plate and a profiled steel sheet. The upper flange, the reinforced concrete plate and the profiled steel sheet are connected by a plurality of studs; the reinforced concrete swing plate can be connected with the profiled steel sheet by additional lateral steel bar. The traditional hot-rolling joist steel and H-shaped profile steel composite beam can be replaced by the corrugated web plate H-shaped profile steel composite bean which has the wider application than joist steel and H-shaped profile steel composite beam; the maximization can be realized for special field and special location comprising the construction of large span industrial and civil building and large span bridge.

The invention belongs to the technical field of architectural profiles and particularly relates to a double corrugated web steel box composite beam. The sectional shape of the invention is composed of two symmetrically arranged corrugated webs, a top flange and a lower flange. The top flange is parallel with the lower flange, the web is vertical to the top flange and the lower flange, the web and the flange are connected by single-side fillet joint, and the web has periodically repetitive trapezoidal wave or sinusoid wave along the length direction. The top of the composite beam is a reinforced concrete wing plate and a profiling steel plate. The top flange, the reinforced concrete slab and the profiling steel plate are connected each other by male pins, and a transverse reinforcement can be additionally used for the connection between the reinforced concrete wing plate and the profiling steel plate. The invention can replace the traditional hot rolled flange beam, H-beam composite beam and welded steel box composite beam; furthermore, the invention has wider application than the flange beam and the H-beam composite beam, and can realize maximization to be used in special fields and special places, including the construction of wide-span industrial and civilian buildings and wide-span bridges, etc.

The invention discloses a steel-super high performance concrete composite beam based on a ribbed plate type bridge deck and a construction method. The construction method includes the following steps that step1, steel beams are machined, manufactured and installed; step2, shearing force connecting parts are welded; step3, the super high performance concrete bridge deck is constructed; step4, a guardrail or an anti-collision wall is constructed; step5, bridge deck pavement is constructed, wherein the super high performance concrete bridge deck and the steel beams are fixed through the shearing force connecting parts, the cross section or/and the longitudinal section of the super high performance concrete bridge deck is/are of a ribbed plate structure, and pre-stressed reinforcements can be arranged on a longitudinal rib region or/and a transverse rib region. The composite beam is reasonable in stress, high in strength and capable of substantially reducing the structure dead weight, effectively avoiding defects at a hogging moment region of a composite continuous beam and bringing tensile strength, compressive strength and high durability of super high performance concrete into full play; the composite beam has the advantages of being small in building height, high in rigidity, small in dead weight, good in durability, crack resistance and fatigue resistance and the like, and has great practical value and good economic benefits.

A truss-type corrugated steel web composite beam with an open bottom chord belongs to a bridge support member. The bottom chord opened and truss-type corrugated steel web composite beam comprises an upper wing edge concrete slab, a corrugated steel web and a bottom chord opened truss-type rectanglar steel tube concrete member. Compared with steel truss-type web composite corss section, the invention adopts the corrugated steel web with rather high shear strength to replace a steel web member, so as to guarantee quite high shear bearing capacity. The opened truss-type bottom chord is composed of two parallel-arranged rectanglar steel tubes arranged in parallel and internally cast concrete, as well as horizontal braces and batter braces between the rectanglar steel tubes. Moreover, the bottom chord adopts the steel tube concrete member to overcome the problem of rather high work volume that, in traditional composite cross section of corrugated steel web box beams and steel truss-type webs, such execution measures as scaffolding, formwork-support, concrete casting and etc. should be taken for lower wing edge concrete slabs. Meanwhie, the invention can effectively improve structure crack resistance, avoid crackage exposure and etc, and considerably increase structure durability. The bottom chord is a brace-connected open-type structure with advantages of simple structure and fast, smooth and convenient execution.

The invention provides a method of using the wind-induced vibration phenomenon of a micro structure to generate power and a micro generator based on wind-induced vibration mechanism and piezoelectric effect, wherein the micro generator comprises a silicon underlay, a composite beam/membrane comprising a piezoelectric layer and metal electrodes on the upper surface and the lower surface thereof, and the like. When the load of environmental wind causes the vibration of the composite beam/membrane structure comprising the piezoelectric layer, the vibration of the beam/membrane structure can cause the alternative change of the stress of the piezoelectric layer; due to the piezoelectric effect, the upper metal electrode and the lower electrode of the piezoelectric layer can generate an alternatively changed electric potential difference; and the electric potential difference can supply power for the load or a power accumulator. The composite beam/membrane structure comprising the piezoelectric layer can adopt a plurality of structure forms comprising a cantilever composite bema, a double-end fixedly supported composite beam, a multi-point fixedly supported composite part or a composite membrane which is partially and fixedly supported in the boundary. The micro wind turbine generator based on wind-induced vibration mechanism does not need a rotating mechanism, has a simple structure, is convenient to adopt silicon micro-processing technology to implement batch processing, has low cost, and is suitable for supplying power for wireless sensing network nodes, and the like.

The invention relates to establishment for a test device and a test method for the bending fracture performance of thin-film materials, in particular to an in situ evaluation system and a method of the mechanical reliability of a layer or a plurality of layers of thin-film materials with the micron to nanometer thickness on a flexible electronic substrate. The system comprises a high-precision micrometer caliper, a balance spring, a translational slide block, a freely supported beam fixed end, a freely supported beam movable end, and the like, wherein a composite beam comprising the micrometer caliper and a flexible substrate exerts precise and controllable step displacement to implement freely supported beam bending experiments; real-time exerted strain corresponding to a freely supported beam span is computed according to parameters and geometrical relationship of the freely supported beam span, sample sizes, and the like; and the bending fracture performance and critical cracking strain of the kind of thin film are tested and evaluated by combining in situ microscopic observation and subsequent scanning electron microscope characterization. The invention does not need to consider the electroconductibility of the thin-film materials, and is still adaptable for non-conductive thin-film materials. The experiment operation is simple and fast, in situ real-time positioning observation and analysis can be carried out on samples.