Open AccessShear modulus loss as damage indicator of structural integrity in bonded joints
Author(s) -
José de Jesús Villalobos-Luna,
Rodrigo Salazar-Colunga,
Pedro LopezCruz,
Moisés Hinojosa Rivera
Publication year - 2022
Publication title -
ingenierias
Language(s) - English
Resource type - Journals
ISSN - 1405-0676
DOI - 10.29105/ingenierias25.92-54
Subject(s) - materials science , composite material , shear modulus , digital image correlation , adhesive , shear (geology) , shear stress , modulus , layer (electronics)
Damage in single lap joints under shear load was assessed. Specimens were tested in accordance with ASTM D1002-10(2019). Controls were taken on adhesive and surface preparation, adhesive thickness, and load-specimen alignment. Digital Image Correlation was used to measure stresses over the adhesive, and shear modulus variation and percent of damage were assessed. Results show shear modulus losses against shear stress. Finally, early damage evolution was determined up to 10% of the shear load rate and later, increasing up to 70%-96%.