摘要:
An extensometer support system having vibration damping mountings for parts that have substantial mass and which are subjected to external vibrations. Such parts include counterweights for counterbalancing the extensometer and also the mounting for an external support frame for the extensometer. The vibration damping comprises a mounting made of a suitable damping material, such as a silicone foam rubber.
摘要:
An extensometer assembly measures axial strain, torsional strain, and various combinations of these strains in a specimen on which the extensometer is mounted, through the use of two extensometers on opposite sides of the specimen coupled by a cross-beam. Connecting assemblies are used to eliminate flexibility in unneeded axes to thereby minimize the opportunities for unwanted signals to occur. The mounting frame is stiff in all axes which are not necessary for measurement. The frame is soft in necessary axes for operation.
摘要:
A quick attach spring retainer holds an extensometer arm onto a test specimen under a resilient load using a unitary spring that is quickly placed onto an extensometer, and which has low mass to minimize any effects on dynamic testing. The spring force is reacted so that it creates a very low disturbing moment on the specimen and extensometer in that this clamping force is applied directly diametrically across from the specimen engaging edge of the extensometer. The unit is made so that it is very stable by providing a three point contact with the spring and the specimen engaging edge. The attachment clip or spring is adjustable across a range of different specimen sizes, using the same type of fixtures, and is made to be a self contained assembly that is not easily lost or misplaced because there are no loose parts. The spring that is utilized is retained in a mounting bracket that is used for attachment.
摘要:
A support system provides a stable reference frame to support an extensometer assembly that measures both axial and torsional strains in a specimen. The reference frame is made so that it will retain an optimal relationship between the specimen and the test machine which is used for loading the specimen. The reference frame is made so that it will not substantially change position in relationship to the specimen during the specimen loading, or cross talk from one measurement axis to the other, while accommodating load frame deflections during the application of axial and torsional loads on the specimen.
摘要:
In one aspect, a transducer body, includes a support including a pair of clevis halves; and a sensor body coupled to each of the clevis halves. The sensor body is disposed between the clevis halves and includes a generally rigid peripheral member disposed about a spaced-apart central hub, the central hub being joined to each of the clevis halves with the peripheral member spaced apart from each clevis half, where at least three flexure components couple the peripheral member to the central hub, and where the flexure components are spaced-apart from each other at generally equal angle intervals about the central hub. A biasing assembly connected between the support and the sensor body is configured to provide a bias force between the sensor body and the support.
摘要:
A load cell comprises two rings having at least three tubes extending from the first ring to the second ring. Sensors are mounted on the tubes to measure strain of the load cell body in a plurality of directions. The load cell can further be mounted on a vehicle spindle to measure forces and moments of a wheel assembly at the spindle as a vehicle is operated.
摘要:
A load cell for sensing forces or moments with respect to an orthogonal coordinate system includes a load cell body and a plurality of sensing circuits. The load cell body includes a rigid central member, a rigid annular ring and a plurality of radial members extending radially and joining the central member to the annular ring. A plurality of sensing circuits are mounted to the plurality of radial members. Each radial member includes a first sensing circuit providing a first output signal responsive to a first force exerted between the central member and the annular ring through the corresponding radial member in a first direction. Each radial member also includes a second sensing circuit providing a second output signal responsive to a second force exerted between the central member and the annular ring through the corresponding radial member in a second direction, wherein the second direction is substantially perpendicular to the first direction.
摘要:
An extensometer structure for an extensometer includes a first extension arm, a second extension arm and a rigid support. A first hinge assembly joins the first extension arm to the rigid support. The first hinge assembly has a first pivot axis that allows the first extension arm to pivot relative to the rigid support about the pivot axis. A second hinge assembly joins the second extension arm to the rigid support. The second hinge assembly has a second pivot axis allowing the second extension arm to pivot relative to the rigid support about the second pivot axis.
摘要:
A load cell assembly for measuring force loads between two elements includes a four-bar linkage with connection arms mounted at opposite corners. Each of the connection arms include a first end rigidly connected to the four-bar linkage and a free end. An overload stop assembly rigidly connected to the four-bar linkage selectively limits displacement of at least one of the free ends when excessive force loads are present.
摘要:
Systems, methods and computer readable media are disclosed for a trusted proxy to intercept communications between an untrusted computerized gaming system and an online multi-player gaming service that requires games to be trusted, allowing the untrusted computerized gaming system to use the multi-player gaming service. In addition to allowing the untrusted computerized gaming system to use the multi-player gaming service in general, the trusted proxy can also limit the extent of the interaction between the untrusted computerized gaming system and the multi-player gaming service.