Test sheet and measurement method
AssigneeShimadzu Corporation
InventorsKuniaki KANAMARU, Tomoki SASAYAMA
Life of this patent
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Abstract
In measuring stress or strain of a sample (1), a test sheet (90) adhered to the sample (1) is irradiated with excitation light. The test sheet (90) includes a substrate layer (92) containing a polymeric material and a stress luminescent layer (91) formed on the substrate layer (92). The stress luminescent layer (91) contains a stress luminescent material. A captured image of the test sheet (90) irradiated with the excitation light is acquired, and the luminous intensity for the test sheet is identified from the captured image.
Claims13
A test sheet configured to be adhered to a target object to which a load is applied in measuring stress or strain, the test sheet comprising:
- a substrate layer containing a polymeric material;
- and
- a stress luminescent layer formed on the substrate layer, the stress luminescent layer containing a stress luminescent material,
- wherein the substrate layer is thicker than the stress luminescent layer.
A test sheet configured to be adhered to a target object to which a load is applied in measuring stress or strain, the test sheet comprising:
- an antistatic layer;
- a substrate layer formed on the antistatic layer, the substrate layer containing a polymeric material;
- and
- a stress luminescent layer formed on the substrate layer, the stress luminescent layer containing a stress luminescent material.
A test sheet configured to be adhered to a target object to which a load is applied in measuring stress or strain, the test sheet comprising:
- an adhesive layer for adhering the test sheet to the target object;
- a substrate layer formed on the antistatic layer, the substrate layer containing a polymeric material;
- and
- a stress luminescent layer formed on the substrate layer, the stress luminescent layer containing a stress luminescent material.
A method of measuring stress or strain of a target object, the method comprising:
- a step of irradiating one or more test sheets adhered to the target object with excitation light, each of the one or more test sheets comprising a substrate layer containing a polymeric material, and a stress luminescent layer formed on the substrate layer, the stress luminescent layer containing a stress luminescent material;
- a step of acquiring a captured image of each of the one or more test sheets irradiated with the excitation light;
- and
- a step of identifying luminous intensity for the one or more test sheets from each of the captured images of the one or more test sheets.
Dependencies are inferred from the claim text.