Resources Contact Us Home
Apparatus for pre-stress-straining rod-type specimens in tension for in-situ passive fracture testing

Image Number 5 for United States Patent #8230748.

A stress-strain testing apparatus imposes a stress-strain on a specimen while disposed in a controlled environment. Each end of the specimen is fastened to an end cap and a strain gage is attached to the specimen. An adjusting mechanism and a compression element are disposed between the end caps forming a frame for applying forces to the end caps and thereby stress-straining the specimen. The adjusting mechanism may be extended or retracted to increase or decrease the imposed stress-strain on the specimen, and the stress-strain is measured by the strain gage on the specimen while the apparatus is exposed to an environment such as high pressure hydrogen. Strain gages may be placed on the frame to measure stress-strains in the frame that may be caused by the environment.

  Recently Added Patents
Image capture system and method
Electronic device
Compositions and methods for producing isoprene
Antibodies to non-functional P2X.sub.7 receptor
Methods and devices for multiple-mode radio frequency synthesizers
Continuous geospatial tracking system and method
Shoe outsole with a surface ornamentation contrast
  Randomly Featured Patents
Method and apparatus for differential pressure testing of catalytic reactor tubes
Process for preparing "living" polymers
Self supportive panel system
Drink dispenser
Pickup cartridge of moving coil type for phonograph
Welding apparatus
NTSC high resolution television converting apparatus for converting television signals of an NTSC system into high resolution television signals
Optical multiplexing device
Video storage cart or similar article
Semiconductor device and method of fabricating the same