| ISO: 75 | Part: 3 | Published: 1993 | Contact: BSI |
| Title | Plastics - Determination of temperature of deflection under load - High strength thermosetting laminates and long-fibre-reinforced plastics |
| Scope | This international standard specifies a method for the determination of the temperature of deflection under load (bending stress) of high-strength thermosetting laminates and compression-moulded long-fibre reinforced plastics. The test load used is not a fixed load, as in part 2 of this international standard, but a function (1/10) of the ultimate or specified load. This allows the method to be applied to materials with a wide range of strengths and bending moduli. |
| Comment | The principle of the method specified is subjecting a standard test specimen to a bending stress equal to 1/10 of a specified or measured flexural strength, raising the temperature at a uniform rate, measuring the temperature, at which a specified deflection occurs. |
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