A high-temperature in-situ loaded computed tomography (CT) testing system based on a laboratory X-ray source and a method therefor are provided. A dynamic sealing device is adopted. A pull-up pressure rod and a pull-down pressure rod are allowed to rotate circumferentially and move axially. Meanwhile, a high-temperature furnace is fixed without rotating or moving, such that the high-temperature furnace is flat in an imaging direction to shorten an imaging distance and improve imaging quality. An independent tensile testing machine is utilized to achieve high-load loading. The in-situ measurement of internal deformation and damage information of a specimen under tensile or compressive load in a high-temperature environment is implemented. By taking advantage of the miniaturization design of the high-temperature device, the accuracy of the damage test using the laboratory X-ray source is increased. Tests and researches on the internal damage and failure behavior of the high-temperature materials can be conducted.

A steel pipe collapse strength prediction model generation method, a steel pipe collapse strength prediction method, a steel pipe manufacturing characteristics determination method, and a steel pipe manufacturing method capable of highly accurately predicting the collapse strength of a steel pipe after forming or a coated steel pipe in consideration of the pipe-making strain during forming. Into a steel pipe collapse strength prediction model generated by the prediction model generation method, steel pipe manufacturing characteristics including the shape of a steel pipe to be predicted after forming, strength characteristics, and the pipe-making strain are input to predict the collapse strength after forming. Into a steel pipe collapse strength prediction model, steel pipe manufacturing characteristics including the shape of a coated steel pipe to be predicted after forming, strength characteristics, the pipe-making strain, and coating conditions are input to predict the collapse strength of the coated steel pipe.

Safety systems and material testing systems including safety systems are disclosed. An example material testing system includes: at least one actuator configured to control one or more operator-accessible components of the material testing system; an actuator disabling circuit configured to disable the at least one actuator; and one or more processors configured to: control the at least one actuator based on a material testing process; monitor a plurality of inputs associated with operation of the material testing system; determine, based on the plurality of inputs and the material testing process, a state of the material testing system from a plurality of predetermined states, the predetermined states comprising one or more unrestricted states and one or more restricted states; and control the actuator disabling circuit based on the determined state.

A method for creating a composite cable having at least one advanced termination on at least one end. An advanced termination is added to an end of a short synthetic tensile strength member. The strength of the tensile strength member and termination is then tested. Once tested satisfactorily, the short cable is spiced onto a long cable of the same type using prior art splicing techniques. The union of the short cable and the long cable creates a “composite” cable having a advanced termination on at least one end. In most applications it is preferable to set the length of the short cable so that the interwoven splice will exist at a desired location.

A transducer assembly is provided. The transducer assembly includes a magnetic portion, a body, a tensile pulse transmitter, and a pulse and current control unit. The magnetic portion is configured to provide a magnetic field. The body is disposed within an opening of the magnetic portion, and has a conductive portion configured to pass electric current near a body surface oriented toward the test surface. The tensile pulse transmitter is disposed within a cavity of the body and configured to transmit a tensile pulse into the test object. The pulse and current control unit is configured to control the tensile pulse transmitted by the tensile pulse transmitter, and to provide a current that passes through the conductive portion of the body and the test object, whereby a force urging the transducer assembly and the test object toward each other is generated responsive to the magnetic field and the current.

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.

This disclosure relates to a real-time video extensometer. Typically, the apparatus of the disclosure combines the image source, data processing and electrical output on to a single processing board in order to achieve high frequency images and low latency times on data flow. Further, the video processing engine processes the image on a pixel basis and updating the output the intermediate extension/strain result so that after receipt of the final image pixel, a final extension/strain value is achieved and immediately output for evaluation.

The present invention relates to a test system and method capable of simultaneously carrying out a high-throughput test of mechanical properties for miniature specimens. The system comprises one workstation (17) and a plurality of specimen test modules (16) installed horizontally or vertically on a workbench (15), wherein the workstation (17) comprises an operation interface, a data processing unit and a load output unit; each specimen test module (16) comprises a drive unit (5), an interchangeable clamp unit (8), a displacement sensor (2), and a load sensor (14); the workstation (17) controls the drive unit (5) of the specimen test module (16) and receives detection data of the displacement sensor (2) and the load sensor (14); each specimen test module (16) optionally performs mechanical property testing independently; and the workstation (17) controls simultaneously started testing of a plurality of specimens (9). The present invention can achieve tensile, bending, compression bending, stress-rupture, relaxation, and fatigue strength tests on a plurality of specimens at the same time.

A grip portion configured to support a test piece is disposed at a central part of a base, and a plurality of pillars are erected on the base. A disposition and number of the plurality of pillars are adjusted so that an X-ray emitted from an X-ray source and transmitting through the test piece transmits through zero or one pillar in an optional image capturing direction. It is possible to avoid a situation in which an attenuation rate of the X-ray largely differs due to a difference in an image capturing direction to the test piece. Thus, it is possible to prevent a strong artifact from overlapping a CT image of the test piece in an X-ray CT image. Moreover, a material testing machine is supported by the plurality of pillars to have an accessible state around the test piece. This configuration facilitates handling of the material testing machine.

Disclosed herein is a method for determining elastic properties of a test body by the use of tensile or compressive loading in a test stand, wherein a centroid line is defined for a longitudinal axis for the test body, centroid line miming through elastic centers of gravity of infinitesimally thick discs which lie orthogonally to the longitudinal axis and into which the test body can be divided. The test body is clamped at two clamping points by clamping devices, and a force is introduced at, at least one of the two clamping points in the direction of the respective other clamping point such that a line of action of a force introduced at, at least one of the clamping points is substantially parallel to a connection line between the two clamping points. Furthermore, by providing additional material or springs to the test body, the center of gravity line of the test body is converted into a modified centroid line of the entire system consisting of the test body and additional material or springs).