Material Strength Using Repeated/Pulsating Forces TRIZ Cases

A flexible membrane holder excites sample resonance to measure shear modulus and viscosity in soft materials with precise, repeatable bulk testing.

Automatic striking and vibration sensing link machine natural frequency to each tensile test, reducing operator workload and resonance-related errors.

Actual transition times are used to adjust test profile segments, cutting iterations and testing time caused by dynamic null pacing.

A dual-station vibration tester prepares and runs multiple fastener samples in sequence, enabling portable comparison of fasteners and threadlockers.

A mask-replica Almen strip holder simulates workpiece shadowing to predict saturation accurately, cut peening time, and reduce impact damage.

Adaptive cyclic loading keeps strain energy release rate nearly constant, cutting fatigue test time and manual crack measurement effort.

Portable x-ray diffraction scanning measures strain and stress in turbine components in place, reducing inspection time, downtime, and cost.

An X-ray diffraction probe scans turbine components in place to detect defects and calculate strain and stress with less downtime.

A spring-preloaded wedge locks the sensing plunger to the loading plunger, shortening setup and speeding sample changes.

Multiple sensors and an invariant model detect fiber rope damage and predict fracture points without destructive testing.

Predict multiaxial fatigue life from thermal dissipation and axial-torsional resistance data.

This integrated test cell simplifies combined loading while observing crack surfaces and recording acoustic emissions from micro-fractures.

A digital-physical testing system links numerical simulation with physical fatigue experiments to automate crack detection and tracking.

A multi-functional fixture applies stretch, shear, and torsion to specimens for mixed-mode fatigue testing.

Automated fall height selection adapts striking energy to soil resistance, enabling detection of soft layers without manual intervention.

An ultrasonic torsional fatigue test applies high-frequency cyclic loads to determine the shear fatigue strength of metallic materials.

Gain calculation device determines optimal control parameters during initial test iteration to eliminate force overshoot and shorten duration.

A hydraulic indenter apparatus uses bellows and position sensors to generate controlled force for material testing.

A polyethylene composition with controlled density and comonomer content enables durable thin film hinges for snap-top lids.

A single motor moves between sample chambers to apply mechanical loads, eliminating idle time and improving productivity during conditioning.

Estimates pipe rigidity and strength by analyzing external vibration responses to excitation forces.

Segmented design isolates the measuring column from the support yoke to eliminate structural overlap during elastic property characterization.

A dynamic characteristic measurement device uses an air spring floating crosshead to measure high-frequency vibrations.

A test rig combining high-frequency tribological stress and low-cycle fatigue on a blade root specimen.

Fatigue tester uses acceleration sensors to monitor vibration and adjust frequency, resolving bending stress measurement issues during resonant tests.

Electromagnetic vibration exciters drive a four-mass resonator to achieve 1000 Hz fatigue testing without hydraulic overheating.

A fatigue testing apparatus applies cyclic loads to material specimens using fluid pressure.

Pneumatic suspension frame system replaces complex hydraulic mechanisms to reduce power consumption and noise during pavement accelerated loading tests.

A test jig for vehicle exterior door handles uses rotating shafts and elastic springs to simulate side collision dynamics.

Movable supports track shifting nodes in real-time, maintaining stress accuracy without interrupting the fatigue test cycle.

A processing system calculates complex Young's and shear moduli using modeled frequency response transfer functions.

Curved jig surfaces limit test piece displacement, preventing fracture while enabling efficient high-frequency fatigue life evaluation.

A conductive foil sensor uses a notch to initiate cracks that increase electrical resistance, avoiding structural weakening from bolted coupons.

A test specimen assembly uses a slotted control element to accelerate fatigue cracking in potting material.

A millipede bar design propagates longitudinal stress pulses through a serpentine path of segmented rods joined by 180-degree bend junctions.

A triaxial electromagnetic Hopkinson bar system measures dynamic mechanical properties of large specimens using square bars and ultrasonic transducers.

Embedded sensors detect microstrain growth during cyclic loading, enabling proactive maintenance before visible cracks appear.

A segmented testing method characterizes fatigue damage in vulcanized rubber using standard tensile machines and hardness testers.

Curved specimens replicate wheel disk geometry to evaluate material suitability while accounting for forming and cutting influences.

Segmented grooves on the expansion sleeve create localized mechanical interlocking zones that enhance pull-out resistance under cracked concrete conditions.

Fractal dimension analysis of magnetic noise signals determines metallic fatigue states without prior load history knowledge.

Deriving lumped dynamics from phase and magnitude relationships enables stable actuator motion.

Rotatable and movable support assemblies adjust holder positions during cyclic loading to simulate realistic bow deformation in wind turbine blade specimens.

A pneumatic membrane applies uniform force to photovoltaic modules, resolving testing inconsistency and reducing manual labor time.

A fretting wear test apparatus uses a servo-hydraulic actuator to control motion parameters.

A high-rigidity flexure in an asymmetric-load support assembly reduces lateral displacement and reaction loads caused by mechanical imbalance.