Disclosed herein are systems, devices and methods for creep testing selected materials within a high-temperature molten salt environment. Exemplary creep testing systems include a load train for holding a test specimen under a load within a heated inert gas vessel. An extensometry system can be included to measure elongation of the test specimen while under load. The extensometry system can include fixed members and axially translating member that move along with the elongation of the test specimen, and the system can include a sensor to measure the relative axial motion between such components to measure elongation of the test specimen over time. The test specimen can include a cylindrical gage portion having an internal void filled with a molten salt during creep testing to simulate the corrosive effect of the molten salt on the specimen material during testing.

Embodiments relate to a device for performing a bending test having a base plate, counter bearings connected via the base plate, bearing blocks which in each case comprise a support for applying a bending sample, and a bending punch or a bending rail for exerting a force on a bending sample. The distance of the supports can be set precisely and in a force resistant manner by abutting the counter bearings and the bearing blocks against each other via contact surfaces inclined to the base plate. Further provided is a method for performing a bending test using a device according to the invention, in the case of which a bending sample is applied on the supports and in the case of which a force is exerted between the supports on the bending sample.

A method for determining a shear property of a sample includes supporting a sample at three or more separate support locations about a periphery of a first surface of the sample in a testing fixture, the sample including a second surface separated from the first surface by a thickness, wherein the sample is axisymmetric about an axis that is orthogonal to the first surface. The method includes applying a load on the second surface of the sample with a load applicator in a direction substantially parallel with the axis, measuring, with a controller, shear testing data of the sample in response to applying the load, and determining, with the controller, a shear property of the sample from the measured shear testing data.

A compressive load is exerted with a test apparatus across a rock sample that has a specified length-to-diameter ratio. A strain on the rock sample is measured during the compressive loading with a strain gauge. A mechanical property of the rock sample is determined based at least in part on the compressive load. An elastic property of the rock sample is determined based at least in part on the measured strain and the compressive load.

A test piece includes a tensile testing part and load applying pieces that are respectively connected to sides of the tensile testing part. Grooves are formed on bottom surfaces of the load applying pieces. Grooves are formed on upper surfaces of the load applying pieces. These grooves respectively partition the upper and lower surfaces of the tensile testing part and the load applying pieces.

A method and apparatus for measuring a dynamic tensile stress and/or tensile strain response of a material such as an elastic material and/or a ductile material. The apparatus may include a striker bar, a stretcher bar, and a drive assembly configured to propel the striker bar toward the stretcher bar. The apparatus may further include a stationary specimen mount and a movable specimen mount that receive a test sample. The striker bar and the stretcher bar of the apparatus may provide a continuous stress on the test sample and an accurate tensile stress/strain measurement.

Analysis method for minimum necking deformation cross-section center stress and strain comprising: recording values for axial acting force, minimum cross-section radius, maximum limit of cross-section radius, inflection point position tangent slope of a rotational generatrix of a contour, radius of cross-section perpendicular to central axis at the inflection point position, and distance between the cross-section perpendicular to the central axis at the inflection point position and minimum cross-section at a necking bottom; and establishing a rectangular coordinate system by taking a center position of the minimum cross-section at the necking bottom as an origin, and substituting the recorded values into mathematical models of a first, second, and third principal stress at a center position of the minimum cross-section to calculate and obtain three principal stress values at the center position of the minimum cross-section, e.g., to calculate stress components, equivalent stresses (Mises), stress invariants, and equivalent plastic strain.

A wide-temperature-range uniaxial and biaxial compression test device in a high-pressure hydrogen environment is provided. An upper computer is interacted with a temperature sensor, a gas pressure sensor, test pressure sensors, displacement sensors, an oxygen/hydrogen concentration monitor, a hydrogen filling system, a vacuum extraction system, a DIC test system, and the other components. The upper computer is used to achieve high-pressure hydrogen environment wide-temperature-range uniaxial and biaxial compression test based on different test modes. Tested engineering stress-strain data is processed to obtain real stress-strain data of rubber, and then the real stress-strain data is processed through a corresponding database to screen out a constitutive model capable of best characterizing the nonlinearity of the rubber specimen. Meanwhile, a strain distribution nephogram generated by a test result of a sample material can be analyzed, thus obtaining a deformation behavior and a failure fracture mechanism of the sample material.

Embodiments relate to a device for performing a bending test having a base plate, counter bearings connected via the base plate, bearing blocks which in each case comprise a support for applying a bending sample, and a bending punch or a bending rail for exerting a force on a bending sample. The distance of the supports can be set precisely and in a force resistant manner by abutting the counter bearings and the bearing blocks against each other via contact surfaces inclined to the base plate. Further provided is a method for performing a bending test using a device according to the invention, in the case of which a bending sample is applied on the supports and in the case of which a force is exerted between the supports on the bending sample.

A device (100) of characterization of the elastic properties of a friction material, comprising: a support yoke (1) having a body (2) with a monoblock structure surrounding an inner chamber (3); said inner chamber (3) being defined superiorly by a first monoblock body portion (2) or upper crossbar (4); said inner chamber (3) being defined inferiorly by a second monoblock body portion (2) or lower crossbar (5); said upper (4) and lower (5) crossbars being mutually connected by two side columns (6, 7) formed by a third and a fourth monoblock body portions (2); said monoblock body comprising at least one access opening (8) to the inner chamber (3); said upper crossbar comprising a threaded through hole (9) defining a device axis (X-X) arranged substantially orthogonal to said upper crossbar (4) and said lower crossbar (5) fully passing through the inner chamber (3); said support yoke <(1) houses, substantially completely in said inner chamber (3), a measuring column (10); said measuring column (10) comprising transmission components of a static and dynamic actions, said components being arranged not necessarily in the order indicated herein below and being mutually arranged stacked substantially along said device axis (X-X) and suitable to be packed together between said upper (4) and lower (5) crossbars so as to transmit a static or dynamic action from one and the other: a preloading screw (11) suitable to engage in said threaded through hole (9) with at least one threaded length (22) thereof to enter said inner chamber (3) according to a predetermined displacement with respect to said upper crossbar (4) along substantially said device axis (X-X) to exert, once the measuring column (10) has been packed, a predetermined static preloading action; an actuator (12) capable of exerting, substantially along said device axis (X-X) an oscillatory thrust action having a predetermined period that is also variable in time in a controlled manner; at least one load cell(13) suitable to detect the preloading action and the oscillatory thrust action exerted by said actuator; at least one specimen support portion (14) to support a specimen of material to be tested (15) suitable to receive the preloading action by the preloading screw (11) and/or the oscillatory action of the actuator (12) and to transmit it to the specimen of material to be tested (15); at least one acceleration sensor or accelerometer