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분야 | ISO/TC 61/SC 2 : Mechanical behavior |
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적용범위 | ISO 178:2010 specifies a method for determining the flexural properties of rigid and semi-rigid plastics under defined conditions. A standard test specimen is defined, but parameters are included for alternative specimen sizes for use where appropriate. A range of test speeds is included. The method is used to investigate the flexural behaviour of the test specimens and to determine the flexural strength, flexural modulus and other aspects of the flexural stress/strain relationship under the conditions defined. It applies to a freely supported beam, loaded at midspan (three-point loading test). The method is suitable for use with the following range of materials:
ISO 178:2010 applies to fibre-reinforced compounds with fibre lengths less than or equal to 7,5 mm prior to processing. For long-fibre-reinforced materials (laminates) with fibre lengths greater than 7,5 mm, see ISO 14125. The method is not normally suitable for use with rigid cellular materials or sandwich structures containing cellular material. In such cases, ISO 1209‑1 and/or ISO 1209‑2 can be used. Contrary to the previous editions of this International Standard, this edition specifies two methods, method A and method B. Method A is identical to the method in previous editions of this International Standard, i.e. it uses a strain rate of 1 %/min throughout the test. Method B uses two different strain rates: 1 %/min for the determination of the flexural modulus and 5 %/min or 50 %/min, depending on the ductility of the material, for the determination of the remainder of the flexural stress-strain curve. |
국제분류(ICS)코드 | 83.080.01 : 플라스틱 일반 |
페이지수 | 19 |
Edition | 5 |
No. | 표준번호 | 표준명 | 발행일 | 상태 |
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1 | ISO 178:2019 | Plastics — Determination of flexural properties | 2019-04-01 | 표준 |
2 | ISO 178:2010/Amd 1:2013 | Plastics — Determination of flexural properties — Amendment 1 | 2013-04-05 | 구판 |
3 | ISO 178:2010 | Plastics — Determination of flexural properties | 2010-12-06 | 구판 |
4 | ISO 178:2001/Amd 1:2004 | Plastics — Determination of flexural properties — Amendment 1: Precision statement | 2004-02-12 | 구판 |
5 | ISO 178:2001 | Plastics — Determination of flexural properties | 2001-12-20 | 구판 |
6 | ISO 178:1993 | Plastics -- Determination of flexural properties | 1993-05-06 | 구판 |
7 | ISO 178:1975 | Plastics -- Determination of flexural properties of rigid plastics | 1975-12-01 | 구판 |
8 | ISO 178:1972 | Title missing - Legacy paper document | 1972-01-01 | 구판 |
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