SAE J815_201211
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Load Deflection Testing of Urethane Foams for Automotive Seating
Hardcopy , PDF
English
19-11-2012
19-11-2012
| DocumentType |
Standard
|
| Pages |
3
|
| PublisherName |
SAE International
|
| Status |
Withdrawn
|
| Supersedes |
Traditionally, cellular foam products have been checked for load deflection by determining the load required to cause a 25% deflection. In automotive seating, on the other hand, the load deflection is checked by determining the thickness under constant force conditions to (a) indicate the initial softness of the seat cushion, (b) measure how thick the seat cushion is under the average passenger load (a measurement of padding left for \"ride\" and seated height), and (c) determine a value to indicate resiliency. In this method these measurements are made by determining the thickness of the seat cushion under fixed loads of 4.5 N, 110 N, and 220 N with a 323 cm2 circular indentor foot.
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