Application of bi-adhesive in double-strap joints subjected to bending moment

Temiz S.

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, cilt.20, sa.14, ss.1547-1560, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 14
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1163/156856106778884262
  • Dergi Adı: JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1547-1560
  • Anahtar Kelimeler: double strap joints, stress analysis, finite element, bi-adhesive, BONDED JOINTS, LAP JOINTS, STRENGTH, STRESS, FILLET
  • İnönü Üniversitesi Adresli: Hayır

Özet

Generally, all failures in adhesively-bonded joints begin at the overlap ends because of the stress concentration occurring at the ends. The approach which reduces stress concentration at the overlap ends increases the load capacity and delays the failure. The lower the stiffness of the adhesive used, the lower the stress concentration, and the lower stress concentration gives rise to higher joint strength. In this work, the results of the application of two adhesives, one stiff and one flexible, with very different mechanical behaviors along the overlap length in double strap joints subjected to bending moment, were analyzed. A stiff adhesive was applied in the middle portion of overlap, while a flexible adhesive was applied towards the edges. The results show that the bi-adhesively-bonded joints carry more loads and have higher strength when compared with single-adhesively-bonded joints.