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ASTM D2918 - 99(2020)
Standard Test Method for Durability Assessment of Adhesive Joints Stressed in Peel
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Significance and Use
4.1 The combination of stress and moisture decreases the durability of most adhesive joints. Stresses in the presence of water or water vapor may cause some adhesive joints to fail at some small fraction of the stress required to break the dry joint. The time to failure for a given adhesive joint generally decreases with increasing stress, temperature, and relative humidity.
4.2 This test method may be used as an accelerated screening test for assessing the durability of adhesive joints. It may be used to measure durability of adhesive joints exposed outdoors or to environmental conditions experienced by adhesive joints in service. It may also be used to determine the effects of various surface preparations or substrates on durabilities of adhesive joints.
4.3 The durability performance of various adhesives may be compared by using this test method under uniform sets of conditions. To assess the overall durability of a given adhesive, T-peel joints should be tested under a range of stress, relative humidity, and temperature. For a specific end use it may be possible to obtain the needed durability data using only one set of test conditions.
1. Scope
1.1 This test method provides data for assessing the durabilities of adhesive joints by means of T-peel type specimens stressed in contact with air, air in equilibrium with certain solutions, water, aqueous solutions, or other environments at various temperatures.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
1.4 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
B209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate
D907 Terminology of Adhesives
D1828 Practice for Atmospheric Exposure of Adhesive-Bonded Joints and Structures
D1876 Test Method for Peel Resistance of Adhesives (T-Peel Test)
D2651 Guide for Preparation of Metal Surfaces for Adhesive Bonding
E104 Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
ICS Code
ICS Number Code 83.180 (Adhesives)
UNSPSC Code
UNSPSC Code 31201601(Chemical adhesives)
Referencing This Standard
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DOI: 10.1520/D2918-99R20
Citation Format
ASTM D2918-99(2020), Standard Test Method for Durability Assessment of Adhesive Joints Stressed in Peel, ASTM International, West Conshohocken, PA, 2020, www.astm.org
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