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5.1 The AE examination method detects structurally significant flaws in FRP structures via test loading. The damage mechanisms that are detected in FRP include resin cracking, fiber debonding, fiber pullout, fiber breakage, delamination, and secondary bond failure.5.2 Flaws in unstressed areas will not generate detectable AE.5.3 Flaws located with AE may be examined by other methods.1.1 This practice provides guidelines for acoustic emission (AE) examinations of fiberglass reinforced plastic (FRP) fan blades of the type used in industrial cooling towers and heat exchangers.1.2 This practice uses simulated service loading to determine structural integrity.1.3 This practice will detect sources of acoustic emission in areas of sensor coverage that are stressed during the course of the examination.1.4 This practice applies to examinations of new and in-service fan blades.1.5 This practice is limited to fan blades of FRP construction, with length (hub centerline to tip) of less than 3 m [10 ft], and with fiberglass content greater than 15 % by weight.1.6 AE measurements are used to detect emission sources. Other nondestructive examination (NDE) methods may be used to evaluate the significance of AE sources. Procedures for other NDE methods are beyond the scope of this practice.1.7 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.8 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM F737-86(1998)e1 Standard Performance Specification for Ice Hockey Skate Blades (Withdrawn 2002) Withdrawn, No replacement 发布日期 :  1970-01-01 实施日期 : 

1.1 This performance specification covers skate blades used in the sport of ice hockey. 1.2 This performance specification is designed to outline acceptable performance requirements without restricting the use of specific materials or construction. 1.3 This performance specification covers classes of skate blades used by hockey players excluding those used by goalkeepers. 1.4 The values stated in SI units are to be regarded as the standard. Inch-pound units in parenthesis are listed for information only. 1.5 The following precautionary caveat pertains only to the test method portion, Section 7, of this specification: This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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1.1 This terminology defines basic terms and considerations for the components of scissors with either inserted or non-inserted blades (see Fig. 1). Instruments in this terminology are limited to those fabricated having scissor blades made from stainless steel and used for surgical procedures.FIG. 1 Components of a Scissors (Inserted and Non-Inserted)1.2 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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1.1 This specification specifies the recommended physical characteristics of the steel blades required for the surface cut test described in ANSI/UL 1703 (Section 24) and IEC 61730-2 (Paragraph 10.3).1.2 ANSI/UL 1703 and IEC 61730-2 are standards for photovoltaic module safety testing.1.3 This standard provides additional fabrication details for the surface cut test blades that are not provided in ANSI/UL 1703 or IEC 61730-2. Surface cut test blades that have out-of-tolerance corner radii or burrs are known to cause erroneous test results, either passes or failures.1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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AS 1912-1976 Hacksaw blades 被代替 发布日期 :  1970-01-01 实施日期 : 

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