Abstract: An apparatus for the measurement of the resistance of a test-piece to shock comprising an anvil, a mass positioned for movement along said axis and into contact with said test-piece positioned at said opening, and a movable thermal medium having a male part with a surface which is penetrable into said opening of said anvil sufficiently for conducting heat to or from said test-piece to bring it to a specified temperature and which is retractable from said opening as said mass moves to contact said test-piece.

Abstract: An instrument for carrying out mechanical strain tests on metallic samples with the addition of an electrical system for varying the temperature with strain, the instrument including opposing arms and associated equipment for holding a sample and varying the mechanical strain on the sample through a plurality of cycles of increasing and decreasing strain within predetermined limits, circuitry for producing an output signal representative of the strain during the tests, apparatus including a set point and a coil about the sample for providing a controlled temperature in the sample, and circuitry interconnected between the strain output signal and set point for varying the temperature of the sample linearly with strain during the tests.

Abstract: Test apparatus for determining ignition characteristics of various metal in oxidizer environments simulating operating conditions for materials, the test apparatus has a chamber (6) through which the oxidizing agent flows, and means for mounting a stationary test sample (36) therein, a powered, rotating shaft (E) in the chamber rigidly mounts a second test sample (35). The shaft is axially movable to bring the samples into frictional engagement and heated to the ignition point. Instrumentation 16, 32, 48, 49, 50, 51, 52, 53, 54 connected to the apparatus provides for observation of temperatures, pressures, loads on and speeds of the rotating shaft, and torques whereby components of stressed oxygen systems can be selected which will avoid accidental fires under working conditions.

Abstract: A method to test a rotating metal part at a cryogenic temperature as a comprehensive non-destructive inspection technique is disclosed. This method for proof testing a rotating metal part was arrived at for a material which has the characteristics of high strength and low fracture toughness at an operating temperature and when placed at a cryogenic temperature, the strength of the material is increased and the fracture toughness is decreased.

Abstract: A cryogenic impact testing method of Charpy's and falling weight types which can test a test piece without substantially exposing the test piece with the atmospheric air under the same test piece cooling space, temperature controlling space and impact testing space, and a cryogenic impact testing machine of Charpy's and falling weight types which can execute suitably the above method. Thus, the stable temperature of the test piece can be obtained at the time of testing with highly reliable measured result.

Abstract: A method of testing additives for the ability to prevent coal particles from freezing and adhering to the sides of coal cars and metal storage devices which comprises the steps of:(a) coating the treatment to be tested on the inside of a small interior diameter steel or aluminum cylinder;(b) soaking the thus-treated cylinder in water for a short time to simulate exposure to precipitation;(c) immediately loading the water-treated cylinder with coal particles;(d) compressing the coal within the cylinder;(e) freezing the coal within the cylinder;(f) removing the coal from the cylinder using means capable of measuring the force required to remove the coal; and(g) comparing that force against the force required to remove the coal from a similar non-treated cylinder.

Abstract: An apparatus for measuring the tear strength of an elastomer specimen having a housing which contains therein a specimen holder, a controllable heat source, a force applying assembly which includes a taut wire, means for measuring the amount of movement of the force applying assembly and a temperature programmer and strip chart recorder. The force applying assembly by means of the taut wire applies a predetermined amount of force on the elastomer specimen which has been precut on one side thereof. The load on the taut wire is counterbalanced by a calibrated spring such that the load decreases linearly to zero as the tearing of the specimen is completed. The result of the tearing is displayed and shows the transition of the elastomer from glass to rubber, the modulus before tearing, the progression of tearing versus increasing temperature, and the strength of the elastomer at elevated temperatures.

Abstract: A specimen testing apparatus is disclosed, including a sensing device for engaging a specimen mounted on a support, an electrical measuring system associated with the sensing device for producing an electrical signal that is a function of a variation in a physical characteristic of the specimen as determined by the sensing device, and an electromagnetic compensation system for applying a compensating force to the sensing device. In one operating condition (as, for example, when the thermal expansion properties of the specimen are being tested), the compensation system is operable to apply to the sensing device a force compensating for the weight of the sensing device, thereby to cause the sensing device to rest upon the specimen in a weightless force-free manner. Alternately, the compensation system may be operable to apply to the sensing device a supplemental force in the compressive stressing condition, as might be desired when penetration tests are to be conducted on the specimen.

Abstract: A heating and cooling apparatus capable of cyclic heating and cooling of a test specimen undergoing fatigue testing. Cryogenic fluid is passed through a block 10 clamped to the specimen 11 to cool the block and the specimen. Heating cartridges 13 penetrate the block 10 to heat the block and the specimen 11 to very hot temperatures. Control apparatus 36 and 46 is provided to alternately activate the cooling and heating modes to effect cyclic heating and cooling between very hot and very cold temperatures. The block 10 is constructed of minimal mass to facilitate the rapid temperature change thereof.