A material evaluation device includes one or more memories; and one or more processors coupled to the one or more memories and the one or more processors configured to: store a certain number of hysteresis curves that, with respect to a change in a first physical quantity of N times at least one of a plurality of positions of a material, each represents a change in a second physical quantity of each time, the N being an integer equal to or greater than 2, extract points extracted by scanning each of the N hysteresis curves with a value of the second physical quantity for at least one of the plurality of positions, generate one-dimensional information regarding the second physical quantity by arraying the extracted points, and acquire a physical property value of the material by using the generated one-dimensional information.

Provided is a test system for hard rock breaking by a microwave intelligent loading based on true triaxial stress, including: a true triaxial stress loading device consisting of a loading frame and a rock sample moving structure; a microwave-induced hard rock breaking device consisting of an excitation cavity, a rectangular waveguide, a magnetron, a thermocouple, a circulator, a cold water circulation device, a flowmeter, a power meter, an automatic impedance tuner, a coupler, a microwave heater and a shielding cavity; and a dynamic rock response monitoring and intelligent microwave parameter control system consisting of a CCD industrial camera, a temperature acquisition device and an anti-electromagnetic high-temperature resistant acoustic wave-acoustic emission integrated sensor. According to the test system, the microwave-induced hard rock breaking test, dynamic monitoring temperature and rock breaking in microwave-induced breaking process and intelligent control over microwave power and heating time are achieved.

The present invention discloses a thermal fatigue crack generator for a large pipe. According to the present invention, the thermal fatigue crack generator for a large pipe precisely manages and controls the heating and cooling conditions for the large size test pipes having a diameter of 250 to 610 mm to significantly improve the reliability of the accuracy and a reproducibility of the thermal fatigue cycle so that a useful advantage is expected to ensure the reliability and the effectiveness of the skill verification of the non-destructive testing.

An apparatus for deformation measurement and a method for deformation measurement are provided. The apparatus includes a housing, a sample holder, a moving mechanism, a first heating device and a second heating device. The sample holder is in the housing. The moving mechanism is over the sample holder. The first heating device is on the moving mechanism. The second heating device is below the sample holder.

There is described a system for characterizing a physical property of a sample. The system generally has a microelectromechanical system (MEMS) device having a framework, a shuttle member extending along a longitudinal orientation within the framework, a shuttle actuator having obliquely extending arms extending between the framework and the shuttle member, the shuttle actuator configured for expanding the arms upon application of electricity thereacross, said expanding applying a force onto the shuttle member and moving the shuttle member at least partly in the longitudinal orientation, and a socket positioned adjacent a tip of the shuttle member; and a MEMS chip receiving the sample and being configured for insertion into the socket, whereby, when the MEMS chip is received in the socket and loaded with the sample, the force applied onto the shuttle member is transferred into stress internal to the MEMS chip via the tip of the shuttle member.

A system for evaluating a bond includes a first electrode and a second electrode that are spaced apart from one another. The system also includes a sacrificial material layer positioned proximate to a surface of a bonded structure that includes the bond. The system also includes a power source configured to cause the first and second electrodes to generate an electrical arc that at least partially ablates the sacrificial material layer as part of a non-destructive inspection of the bond.

A method for testing a ceramic component for a fracture toughness includes changing the temperature of the component to a first temperature, for example, by heating the component, and changing the temperature of the component to a second temperature, for example, by cooling the component and testing the component for cracks. The temperature difference between the first temperature and the second temperature is determined based on a minimum fracture toughness.

Methods and apparatus are disclosed to determine material parameters of a turbine rotor. An example apparatus includes a rotor geometry determiner to determine a geometry of the rotor, a node radius calculator to calculate radial node locations of radial nodes including a first radial node, a thermocouple interface to record first temperature values over an interval, a first thermal stress calculator to calculate first thermal stress values at one or more of the radial nodes over the interval, a node temperature calculator to calculate second temperature values at respective internal nodes of the first radial node, a reference value lookup to lookup first material parameter information, a second thermal stress calculator to determine second thermal stress values, a thermal stress comparator to calculate a difference between the thermal stress values, and, in response to the difference not satisfying a threshold, a material parameter adjuster to determine material parameters.

A system for evaluating a bond includes first and second electrodes. A dielectric material layer is positioned at least partially between the first and second electrodes. A power source is connected to the first and second electrodes. The power source is configured to cause the first and second electrodes to generate an electrical arc. The electrical arc is configured to at least partially ablate a sacrificial material layer to generate a plasma.

In a general implementation, data regarding a rock sample from a drilling site is received. A thermal-mechanical interaction model is generated based on the rock sample date. The thermal-mechanical interaction model is used to determine a penetration rate and mechanical damage around perforation channels through the modeling of heat that is emitted on an exposed surface of the rock sample by a laser beam emitted from a laser beam source. The determined penetration rate and mechanical damage is used to evaluate an effectiveness of the laser beam source to be used in a perforation at the drilling site.