EFFECT OF BONDED COMPOSITE PATCH ON THE STRESS INTENSITY FACTORS FOR A CENTER-CRACKED PLATE

ABDUL AAbid; Meftah Hrairi; JAFFAR SYED MOHAMMED Ali; Ahmed Abuzaid

doi:10.31436/iiumej.v20i2.912

Authors

ABDUL AAbid IIUM https://orcid.org/0000-0002-4355-9803
Meftah Hrairi IIUM https://orcid.org/0000-0003-3598-8795
JAFFAR SYED MOHAMMED Ali IIUM https://orcid.org/0000-0001-6471-7332
Ahmed Abuzaid https://orcid.org/0000-0002-6425-5948

DOI:

https://doi.org/10.31436/iiumej.v20i2.912

Keywords:

stress intensity factor, center crack, composite patch, finite element

Abstract

Crack propagation until fracture is an important criterion to predict a structure‘s service life. In order to increase the latter, the cracked component needs to be repaired or replaced. In the present study, a finite element analysis has been carried out to investigate the effects of adhesive thickness, patch thickness and crack length on the passive repair performance of a center-cracked rectangular aluminum plate under mode-I loading condition using an ANSYS package. A comprehensive parametric study shows that the stress intensity factor is influenced by the patch thickness, patch size, adhesive material, and adhesive thickness.

ABSTRAK: Penyebaran retak sehingga patah adalah kriteria penting bagi menjangka hayat struktur. Bagi memanjangkan jangka hayat struktur, komponen keretakan perlu dibaik pulih atau diganti. Kajian ini telah menjalankan analisis elemen tak terhingga bagi mengetahui kesan ketebalan pelekat, ketebalan tampalan dan panjang retak pada bahagian keretakan tengah plat petak aluminium yang dibaiki secara pasif, menggunakan pakej ANSYS di bawah beban mod-I. Kajian parametrik yang menyeluruh menunjukkan faktor tekanan intensif dipengaruhi oleh ketebalan tampalan, saiz tampalan, bahan pelekat dan ketebalan pelekat.

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