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Griggs apparatus
Griggs apparatus, also referred to as a Griggs rig, is a modified piston cylinder high pressure apparatus used to create an environment of high pressure, high temperature and to impart a deviatoric stress on a sample of material. It was conceived in the 1960s.
Sample sizes range depending on the specific Griggs apparatus but generally can be up to approximately 150 mm3, and temperatures of up to 1600 K along with pressures of approximately 3 GPa can be achieved.
== History ==
The Griggs apparatus was conceived by David Griggs in the mid 1960s during his time at the University of California at Los Angeles (UCLA). Since the inception of the Griggs apparatus it has become the work horse of many rock deformation labs world-wide, and has also helped elucidate numerous facets of plastic deformation in crystalline materials including the hydrolytic weakening of quartz.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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