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ASTM D5229/D5229M-14
Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials- 발행일 : 2014-05-15
- 발행기관 : ASTM
상세정보
| 분야 | 15.03 : 공간시물레이션; 항공우주재료; 고율섬유와 합성물 |
|---|---|
| 적용범위 | 1.1 This test method covers a procedure for the determination of moisture absorption or desorption properties in the through-the-thickness direction for single-phase Fickian solid materials in flat or curved panel form. Also covered are procedures for conditioning test coupons prior to use in other test methods; either to an essentially moisture-free state, to equilibrium in a standard laboratory atmosphere environment, or to equilibrium in a non-laboratory environment. Also included are procedures for determining the moisture loss during elevated temperature testing, as well as moisture loss resulting from thermal exposure after removal from the conditioning environment, such as during strain gage bonding. While intended primarily for laminated polymer matrix composite materials, these procedures are also applicable to other materials that satisfy the assumptions of 1.2. 1.2 The calculation of the through-the-thickness moisture diffusivity constant in Procedure A assumes a single-phase Fickian material with constant moisture absorption properties through the thickness of the specimen. The validity of the equations used in Procedure A for evaluating the moisture diffusivity constant in a material of previously unknown moisture absorption behavior is uncertain prior to the test, as the test results themselves determine if the material follows the single-phase Fickian diffusion model. A reinforced polymer matrix composite material tested below its glass-transition temperature typically meets this requirement, although two-phase matrices such as toughened epoxies may require a multi-phase moisture absorption model. While the test procedures themselves may be used for multi-phase materials, the calculations used to determine the moisture diffusivity constant in Procedure A are applicable only to single-phase materials. Other examples of materials and test conditions that may not meet the requirements are discussed in Section 6. 1.3 The evaluation by Procedure A of the moisture equilibrium content material property does not assume, and is therefore not limited to, single-phase Fickian diffusion behavior. 1.4 The procedures used by this test method may be performed, and the resulting data reduced, by suitable automatic equipment. 1.5 This test method is consistent with the recommendations of CMH-17 Rev G (1),2 which describes the desirable attributes of a conditioning and moisture property determination procedure. 1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.6.1 Within the text the inch-pound units are shown in brackets. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
| 국제분류(ICS)코드 | 83.140.20 : 적층 시트 |
| 페이지수 | 19 |
| Edition | 14 |
이력정보
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ASTM D5229/D5229M-20상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 2020-03-01 | 표준 |
| 2 | ASTM D5229/D5229M-20 REDLINE상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 2020-03-01 | 표준 |
| 3 | ASTM D5229/D5229M-14상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 2014-05-15 | 구판 |
| 4 | ASTM D5229/D5229M-14e1상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 2014-05-15 | 구판 |
| 5 | ASTM D5229/D5229M-14 REDLINE상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 2014-05-15 | 구판 |
| 6 | ASTM D5229/D5229M-12상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 2012-02-01 | 구판 |
| 7 | ASTM D5229/D5229M-92(2010)상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 2010-05-01 | 구판 |
| 8 | ASTM D5229/D5229M-92(2004)상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 2004-03-01 | 구판 |
| 9 | ASTM D5229/D5229M-92(1998)e1상세보기 | Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials | 1998-01-01 | 구판 |
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