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Effect of Bondline Thickness on Mixed-Mode Debonding of Adhesive Joints to Electroprimed Steel Surfaces
- Source :
- The Journal of Adhesion; August 1990, Vol. 32 Issue: 2 p171-191, 21p
- Publication Year :
- 1990
-
Abstract
- Structural applications of adhesive bonding have been increasing in recent years due to improvements in the types of adhesives available and in improved knowledge of bonding procedures. Consequently, there exists a demand for techniques to assess adhesive joint strength, particularly along bondline interfaces where compliant adhesives contact more rigid metallic surfaces. The present study investigates the mixed-mode response of cracked-lap-shear (CLS) joints bonded with unprimed and electroprimed steel adherend surfaces. Three bondline thicknesses, representative of structural automotive joints, were evaluated for unprimed and primed bondlines. Experimental results for static load versus debond extension were input to finite element analyses for computing debond parameters (strain energy release rates). The debonds always initiated at a through-the-thickness location that had the greatest peel component of strain energy release rate. The total strain energy release rate values correlated well with trends in joint strength as a function of bondline thickness.
Details
- Language :
- English
- ISSN :
- 00218464 and 1563518X
- Volume :
- 32
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- The Journal of Adhesion
- Publication Type :
- Periodical
- Accession number :
- ejs11273001
- Full Text :
- https://doi.org/10.1080/00218469008030189