ASTM E2982-14
航空航天设备中使用的长纤维缠绕的压力容器中薄壁金属内衬物无损检测的标准指南
Standard Guide for Nondestructive Testing of Thin-Walled Metallic Liners in Filament-Wound Pressure Vessels Used in Aerospace Applications
- 标准号
- ASTM E2982-14
- 发布
- 2014年
- 发布单位
- 美国材料与试验协会
- 替代标准
- ASTM E2982-14e1
- 当前最新
- ASTM E2982-21
- 引用标准
- ANSI/AIAA S-081 ASTM C274 ASTM D1067 ASTM D3878 ASTM D5687/D5687M ASTM E1000 ASTM E1032 ASTM E1066 ASTM E1209 ASTM E1210 ASTM E1219 ASTM E1255 ASTM E1309 ASTM E1316 ASTM E1416 ASTM E1417 ASTM E1419 ASTM E1434 ASTM E1471 ASTM E165 ASTM E1815 ASTM E2007 ASTM E2033 ASTM E2104 ASTM E215 ASTM E2261 ASTM E2338 ASTM E2375 ASTM E2698 ASTM E2736 ASTM E2884 ASTM E426 ASTM E432 ASTM E493 ASTM E499 ASTM E543 ASTM E976 ISO 9712 MIL-HDBK-1823 MIL-HDBK-340 MIL-HDBK-6870
- 适用范围
4.1 The COPVs covered in this guide consist of a metallic liner overwrapped with high-strength fibers embedded in polymeric matrix resin (typically a thermoset). Metallic liners may be spun formed from a deep drawn/extruded monolithic blank or may be fabricated by welding formed components. Designers often seek to minimize the liner thickness in the interest of weight reduction. COPV liner materials used can be aluminum alloys, titanium alloys, nickel-chromium alloys, and stainless steels, impermeable polymer liner such as high density polyethylene, or integrated composite materials. Fiber materials can be carbon, aramid, glass, PBO, metals, or hybrids (two or more types of fiber). Matrix resins include epoxies, cyanate esters, polyurethanes, phenolic resins, polyimides (including bismaleimides), polyamides and other high performance polymers. Common bond line adhesives are; FM-73, urethane, West 105, Epon 862 with thicknesses ranging from 0.13 mm (0.005 in.) to 0.38 mm (0.015 in.). Metal liner and composite overwrap materials requirements are found in ANSI/AIAA S-080 and ANSI/AIAA S-081, respectively. Pictures of representative COPVs are shown in E07’s forthcoming Guide for Nondestructive Testing of Composite Overwraps in Filament-Wound Pressure Vessels Used in Aerospace Applications.
4.2 The operative failure modes COPV metal liners and metal PVs, in approximate order of likelihood, are: (a) fatigue cracking, (b) buckling, (c) corrosion, (d) environmental cracking, and (e) overload.
Note 2: For launch vehicles and satellites, the strong drive to reduce weight has pushed designers to adopt COPVs with thinner metal liners. Unfortunately, this configuration is more susceptible to liner buckling. So, as a precursor to liner fatigue, attention should be paid to liner buckling.
4.3 Per MIL-HDBK-340, the primary intended function of COPVs as discussed in this guide will be to store pressurized gases and fluids where one or more of the following apply:
4.3.1 Contains stored energy of 19 310 J (14 240 ft-lbf) or greater based on adiabatic expansion of a perfect gas.
4.3.2 Contains a gas or liquid that would endanger personnel or equipment or create a mishap (accident) if released.
4.3.3 Experiences a design limit pressure greater than 690 kPa (100 psi).
4.4 Per NASA-STD-(I)-5019, COPVs shall comply with the latest revision of ANSI/AIAA Standard S-081. The following requirements also apply when implementing S-081:
4.4.1 Maximum Design Pressure (MDP) shall be substituted for all references to Maximum Expected Operating Pressure (MEOP) in S-08......
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