Abstract: A method of producing a stress-luminescent material according to one aspect of the present invention includes a preparation step of preparing a stress-luminescent material including monoclinic particles having a stress luminescence ability, and a pulverization step of pulverizing the stress-luminescent material while maintaining a crystal structure of the monoclinic particles.

Abstract: Creating a calibration curve representing a relationship between a luminescence intensity of stress luminescence and a stress includes: forming a second stress luminescent film on a surface of a test piece; applying external force to the test piece; detecting external force to be applied to the test piece; photographing the test piece under application of external force; creating a luminescence intensity-stress curve plotting a relationship between a luminescence intensity of stress luminescence and a stress, on the basis of a photographed luminescent image of the second stress luminescent film and a detection value of the external force; and creating a regression equation consisting of a fourth or higher degree polynomial representing a regression relationship of the stress with respect to the luminescence intensity by polynomial regression analysis of the luminescence intensity-stress curve.

Abstract: A sample pretreatment device of an aspect of the present invention includes a conveyance mechanism (22) including a Z-axis guide (223) that linearly moves in two axes of an X axis and a Y axis and expands/contracts in a Z-axis direction on a table (21) where a unit that performs each step of pretreatment is arranged. The Z-axis guide (22) is integrally provided with a liquid handler (224) and a grip handler (225) oriented in opposite directions to each other. A side wall of a housing (20) on the autosampler side is provided with a sample conveyance opening (201). When pretreatment of a sample ends, the Z-axis guide (223) is moved to a position close to the opening (201) in a state where a gripper (228) grips a pretreated plate. An arm (227) enters a housing of the autosampler through the opening (201) and an opening formed in the autosampler, and sets a plate at a predetermined position.

Abstract: A fiber-reinforced metal comprising glass fibers and a matrix metal, said glass fibers having a nitrogen content of at least 8 atomic %. The fiber-reinforced metal has a high tensile strength and elasticity.