Performance evaluation method for elastic material
AssigneeSumitomo Rubber Industries, Ltd.
InventorsRyo Mashita, Hiroyuki Kishimoto
Life of this patent
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Abstract
A performance evaluation method for elastic material including rubber or elastomer, the method includes a step of applying a strain to a test piece made of the elastic material to form at least one void inside the test piece, a step of obtaining projected images of the test piece by irradiating the test piece with X-rays at a plurality of times after the at least one void is formed, and a step of obtaining a volume change of the at least one void between the plurality of times based on the projected images, as one of indexes of performance.
Claims13
A performance evaluation method for elastic material including rubber or elastomer, the method comprising:
- a step of applying a strain to a test piece made of the elastic material to form at least one void inside the test piece;
- a step of obtaining projected images of the test piece by irradiating the test piece with X-rays at a plurality of times after the at least one void is formed;
- and
- a step of obtaining a volume change of the at least one void between the plurality of times based on the projected images, as one of indexes of performance,
- wherein the plurality of times comprises:
- a first time when a strain given to the test piece reaches a predetermined first threshold value;
- and
- a second time after a predetermined time has elapsed from the first time.
A performance evaluation method for elastic material including rubber or elastomer, the method comprising:
- a step of applying a strain to a test piece made of the elastic material to form at least one void inside the test piece;
- a step of obtaining projected images of the test piece by irradiating the test piece with X-rays at a plurality of times after the at least one void is formed;
- a step of obtaining a volume change of the at least one void between the plurality of times based on the projected images, as one of indexes of performance;
- a step of evaluating the performance of the elastic material based on the volume change,
- wherein the evaluation step comprises:
- a step of comparing the volume change with a predetermined second threshold value;
- and
- a step of determining that the performance of the elastic material is good when the volume change is equal to or less than the second threshold value.
Dependencies are inferred from the claim text.