STP1224

    Cyclic Fatigue Test as a Method for Distinguishing Between Cracking and Non-Cracking Shingles

    Published: Jan 1994


      Format Pages Price  
    PDF Version (152K) 12 $25   ADD TO CART
    Complete Source PDF (3.5M) 12 $56   ADD TO CART


    Abstract

    A servo-hydraulic fatigue tester attempts to simulate stress cycles that shingles undergo on the roof. The test measures a shingle's resistance to tensile fatigue. Shingle specimens are subjected to a specific load under tension. The tension is released and then brought up to the designated load again. This cycling occurs at a frequency of 10 Hz until the sample breaks. Cyclic fatigue results were definitive in discriminating shingles that performed poorly versus shingles that performed well in service. The results of the testing has provided information on the endurance limit of shingles at an accelerated rate of cyclic tension.

    Keywords:

    tensile fatigue, endurance limit, asphalt shingles, tensile strength, composite material


    Author Information:

    Datta, MM
    Research Chemist, Schuller International, Inc., Denver, CO

    Corbin, RL
    Director of BURSI, Schuller International, Inc., Denver, CO


    Paper ID: STP12902S

    Committee/Subcommittee: D08.02

    DOI: 10.1520/STP12902S


    CrossRef ASTM International is a member of CrossRef.