A hose to be evaluated is installed on a fixing frame in a preset shape, and a strain gauge and markers are attached to a surface of the hose. During a course of application of predetermined internal pressure to the hose, strain data is acquired using the strain gauge and an image of an external shape of the hose is captured using a camera device to acquire image data. Based on the strain data and the image data acquired, a change in the shape of the hose between a plurality of time points at identical internal pressure is determined. Such hose fatigue resistance evaluation method can determine changes in the degree of deformation of a hose over time due to repeated application of internal pressure.

A hose to be evaluated is installed on a fixing frame in a preset shape, and a strain gauge and markers are attached to a surface of the hose. During a course of application of predetermined internal pressure to the hose, strain data is acquired using the strain gauge and an image of an external shape of the hose is captured using a camera device to acquire image data. Based on the strain data and the image data acquired, a change in the shape of the hose between a plurality of time points at identical internal pressure is determined. Such hose fatigue resistance evaluation system can determine changes in the degree of deformation of a hose over time due to repeated application of internal pressure.

A bending apparatus for a sample is disclosed. The bending apparatus includes a translation mechanism that translates a vertical displacement/force into a horizontal displacement/force for bending. Components of the bending apparatus are fabricated from a strong, radiolucent material. In these ways, the bending apparatus is compatible with micro-CT imaging, and as such, may be used to bend a sample during imaging. In a particular application, the bending apparatus may be used to measure biomechanical properties of a bone, such as bone strength, bone material properties, fracture toughness, and fracture propagation.

An adjustable induction heating coil and cooling plenum assembly for use in a strain-controlled thermo-mechanical fatigue test of a specimen, wherein the specimen is suspended in a load frame under a constant tensile force, comprising: a heating coil comprised of a plurality of windings of a metal tube having a first end and a second end, comprised of metallic tubing suitable for connection to a radio frequency induction furnace; a moveable stage slideably connected to a stage assembly comprising: a dielectric block having at least one elongated slot; a connection block slideably connected to the dielectric, having a hollow conduit through the heating coil connection block and a connection fitting fixedly attached at first and second ends of the hollow conduit; and a cooling plenum assembly comprising: a relatively thin, flat toroid-like shaped plenum having a cap fixedly connected to a body, a hollow central bore, and a perimeter sidewall surrounding the hollow central bore; a first perimeter shape of the hollow central bore substantially conforms to a second perimeter shape of the specimen; a continuous hollow channel within said perimeter sidewall; a continuous opening of between 0.002 and 0.004 inches between the cap and the body on an interior side of said perimeter sidewall.

A method and apparatus for digital image correlation. A camera system is used to obtain larger scale images of a larger scale dot pattern on a surface of a workpiece and smaller scale images of a smaller scale dot pattern on the surface of the same workpiece. The smaller scale dot pattern forms a larger dot in the larger scale dot pattern in the larger scale images. The larger scale images and the smaller scale images may be used to determine a measurement of the workpiece.

A method of in-situ TEM nanoindentation for a damaged layer of silicon is disclosed. Wet etching and ion beam lithography are used for preparing a silicon wedge sample. An etched silicon wedge is thinned and trimmed by a focused ion beam; thinning uses ion beam of 30 kV: 50-80 nA, and trimming uses ion beam of 5 kV: 1-6 pA; and the top width of the silicon wedge is 80-100 nm. The sample is fixed on a sample holder of an in-situ TEM nanomechanical system by using a conductive silver adhesive. The sample is indented with a tip in the TEM, so that the thickness of the damaged layer of the sample is 2-200 nm; and an in-situ nanoindentation experiment is conducted on the damaged layer of the sample in the TEM.

A method and apparatus for testing the response of protective headgear 104 to impact forces. A high-speed cineradiography imaging system 100 is used to obtain full-field, time-resolved internal monitoring and measurement of headgear component (pads 140 and liners 142) deformation and interaction with a head surrogate (headform 102), deformation of headform components, and stress and strain transfer into the headform. Radiopaque contrast materials (144 & 148) and integration techniques are used to highlight specific regions of interest within the headgear and headform components during the impact loading events.

Disclosed are a hole expansion ratio testing device, a hole expansion ratio testing method, and an operation program. The hole expansion ratio testing device includes a chucking unit configured to chuck a plate member having a hole, a punching unit inserted into the hole and configured to expand the hole, an image acquisition unit configured to acquire an image of the hole expanded by the punching unit, and an analysis unit configured to extract an interest area corresponding to the hole from the acquired image, linearize the interest area, and provide information on a crack as a blob changes due to the linearization.

A method of marking a hydrated tissue specimen for mechanical testing is provided. The method includes adding a metal nanoparticle precursor solution to a reducing agent solution to form a mixture; incubating the mixture to form a plurality of aggregated metal nanoparticles, where each of the aggregated metal nanoparticles includes a plurality of individual metal nanoparticles; separating the plurality of aggregated metal nanoparticles from a supernatant by means of centrifugation or gravitational settling; resuspending the plurality of aggregated metal nanoparticles in a buffer solution to form a colloidal metal nanoparticle suspension; and soaking the hydrated tissue specimen in the colloidal metal nanoparticle suspension, where at least a portion of the plurality of aggregated metal nanoparticles adhere to the hydrated tissue specimen in a random pattern of speckles.

Described are systems and methods for fixture identification in test systems. A method for fixture identification in a test system may include capturing image data representative of a first fixture of the test system with an imaging device. The method may further include transmitting the image data representative of the first fixture from the imaging device to a processor running an image recognition application. The method may also include identifying the first fixture based on the image data with the processor running the image recognition application.