SAE J388_196903 PDF
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DYNAMIC FLEX FATIGUE TEST FOR SLAB POLYURETHANE FOAM
Description
This SAE Recommended Practice describes a laboratory test procedure for evaluating the loss of thickness and the amount of structural breakdown of slab polyurethane foam seating materials. A test specimen is measured for thickness under a specified load and subsequently subjected simultaneously to compressive and shear deformation in a controlled atmosphere. This is accomplished by subjecting the foam to a rolling shearing action under a constant load for a specified number of cycles. Specimen thickness under a constant load is obtained after a 1 hr recovery period following dynamic fatigue to determine loss in foam thickness.
History
| J388_199806 | 1998-06-01 | Latest | Canceled |
| J388_196903 | 1969-03-01 | Historical | Issued |
| ISSUING COMMITTEE | Textile and Flexible Plastics Committee |
|---|---|
| DATE | 1969-03-01 |
| DOI | |
| ISCURRENT | |
| PAGE | 2 |
| PUBLISHER | SAE International |
| REVISED | ISSUED |
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