摘要:
A device is disclosed for testing the useful life of particulates, such as, steel shot, grit or other abrasives. The device employs a blast wheel for throwing the shot at high velocity against an annular target. The wheel and target are mounted on a rotating structure so that substantially all of the spent particulate is continually returned to the wheel via a recirculating tube. In this manner accurate evaluation of a particulate sample under test can be accomplished.
摘要:
A rotary shock testing machine including: a base; a shaft rotatable relative to the base; a test disc for holding one or more specimens to be tested, the test disc being rotatable with the shaft; an actuator for applying a rotation to the shaft and test disc; and a brake for applying a braking force to the test disc to subject the one or more specimens to a rotary shock.
摘要:
An apparatus and method for conducting destructive testing is disclosed. A flywheel 14 supports a hammer 60 on an outer periphery thereof and in fixed position relative thereto. A carriage 90 includes a support mechanism which supports a coupon C taken from an article of manufacture. The carriage 90 moves between a first retracted position and a second deployed position. In the deployed position, the coupon C is placed into the path of the hammer 60 as the flywheel 14 rotates. Sensing means 200 are provided for sequencing the advancement of the coupon C into the hammer's path. Means are provided for disengaging a drive which powers the flywheel 14 immediately prior to the hammer 60 impacting and severing the coupon C. Means are further provided for measuring the decrement in flywheel speed caused by severing the coupon C. The decrement can be related to the force required in passing the hammer 60 through the coupon C which in turn relates to thez properties of material forming the coupon C.
摘要:
A collision simulation test apparatus including a table to which a test piece is to be attached, the table being movable in a predetermined direction, a toothed belt for transmitting power to drive the table, a drive module capable of driving the toothed belt, and a control part capable of controlling the drive module. The control part is capable of controlling the drive module to generate an impact to be applied to the test piece, and the impact generated by the drive module is transmitted to the table by the toothed belt.
摘要:
The present technology provides an impact test device and method. The rotational speed of a rotary drum with a rubber sample attached on the outer surface is set to a desired rotational speed, the impact cycle for the surface of the rubber sample of the contact member by the repeat-impact mechanism is set to a desired cycle, the impact load by the contact member is set to a desired impact load by a weight member, a desired contact member is selected from among the plurality of contact members with different specifications, and the contact member is repeatedly made to collide with the surface of the rubber sample by rotating a vertical excitation roller and pivoting the arm portion in the vertical direction with a rotation shaft.
摘要:
A shock testing machine including: a test platform upon which one or more objects to be tested are mounted; one or more rails upon which the test platform is movable in a longitudinal direction; and a braking station for retarding a relative motion between the test platform and the braking station, wherein the test platform and the braking station include at least one portion interfering with the relative motion of the test platform and the braking station such that relative movement of the test platform and the braking station past the at least one portion produces a shock lateral to the longitudinal direction.
摘要:
A shock machine using a variable viscosity medium. A magnetic fluid shock tester enables the application of programmed shock pulses without the use of an impact medium. A fluid, whose viscosity can be readily varied in a predetermined manner, is provided with a driving force to set the fluid into motion and this motion in turn is imparted to a test platform which contains the test object. Any sudden change in the viscosity of the fluid is transferred directly to the test item, thereby imparting the desired shock signature to the item. The effect of the shock on the item is then measured electronically or visually as desired.