scholarly journals Elastoplastic analysis of cracked Aluminum plates with a hybrid repair technique using the bonded composite patch and drilling hole in opening mode I

2020 ◽  
Vol 14 (52) ◽  
pp. 256-268
Author(s):  
Wahiba Nessrine Bouzitouna ◽  
Wahid Oudad ◽  
Mohamed Belhamiani ◽  
Djamel Eddine Belhadri ◽  
Leila Zouambi
Keyword(s):  
Elastoplastic Analysis ◽  
Mode I ◽  
Composite Patch ◽  
Repair Technique ◽  
Drilling Hole ◽  
Opening Mode ◽  
Bonded Composite ◽  
Hybrid Repair ◽  
Aluminum Plates

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

2019 ◽  
Vol 20 (2) ◽  
pp. 211-221 ◽  
Author(s):  
ABDUL AAbid ◽  
Meftah Hrairi ◽  
JAFFAR SYED MOHAMMED Ali ◽  
Ahmed Abuzaid
Keyword(s):  
Stress Intensity ◽  
Loading Condition ◽  
Patch Size ◽  
Mode I ◽  
Intensity Factors ◽  
Adhesive Material ◽  
Element Analysis ◽  
Composite Patch ◽  
Bonded Composite ◽  
Adhesive Thickness

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.

scholarly journals Fatigue Life Improvement of Cracked Aluminum 6061-T6 Plates Repaired by Composite Patches

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1421
Author(s):  
Armin Yousefi ◽  
Saman Jolaiy ◽  
Reza Hedayati ◽  
Ahmad Serjouei ◽  
Mahdi Bodaghi
Keyword(s):  
Fatigue Life ◽  
Fatigue Behavior ◽  
Weight Ratio ◽  
High Strength ◽  
Plastic Strain Amplitude ◽  
Composite Patch ◽  
Life Improvement ◽  
Cracked Structures ◽  
Aluminum Plates ◽  
High Flexibility

Bonded patches are widely used in several industry sectors for repairing damaged plates, cracks in metallic structures, and reinforcement of damaged structures. Composite patches have optimal properties such as high strength-to-weight ratio, easiness in being applied, and high flexibility. Due to recent rapid growth in the aerospace industry, analyses of adhesively bonded patches applicable to repairing cracked structures have become of great significance. In the present study, the fatigue behavior of the aluminum alloy, repaired by a double-sided glass/epoxy composite patch, is studied numerically. More specifically, the effect of applying a double-sided composite patch on the fatigue life improvement of a damaged aluminum 6061-T6 is analyzed. 3D finite element numerical modeling is performed to analyze the fatigue performance of both repaired and unrepaired aluminum plates using the Abaqus package. To determine the fatigue life of the aluminum 6061-T6 plate, first, the hysteresis loop is determined, and afterward, the plastic strain amplitude is calculated. Finally, by using the Coffin-Manson equation, fatigue life is predicted and validated against the available experimental data from the literature. Results reveal that composite patches increase the fatigue life of cracked structures significantly, ranging from 55% to 100% for different applied stresses.

Development of smart bonded composite patch repair solution

2020 ◽  
Author(s):  
Florian Lambinet ◽  
Zahra Sharif Khodaei
Keyword(s):  
Patch Repair ◽  
Composite Patch ◽  
Bonded Composite

Bonded Composite Patch Design for Aircraft Structures Exhibiting Cracking and Corrosion

2005 ◽  
Vol 42 (1) ◽  
pp. 269-274 ◽  
Author(s):  
Madhukar Singh ◽  
William P. Schonberg
Keyword(s):  
Aircraft Structures ◽  
Composite Patch ◽  
Bonded Composite

Experimental and numerical investigation in failure of cracked aluminum plates repaired with bonded FML composite patch, under impact loading

2014 ◽  
Vol 21 (4) ◽  
pp. 493-503
Author(s):  
Lotfali Mozafari Vanani ◽  
Hamed Moayeri Kashani ◽  
Ali Pourkamali Anaraki ◽  
Faramarz Ashenai Ghasemi
Keyword(s):  
Energy Absorption ◽  
Metal Layer ◽  
Three Dimensional ◽  
Charpy Impact ◽  
J Integral ◽  
Element Analysis ◽  
Composite Patch ◽  
Crack Propagation Direction ◽  
Surface Method ◽  
Aluminum Plates

AbstractIn this paper, Charpy impact tests were conducted on cracked aluminum plates repaired with FML composite patches. The effects of the crack characteristics and patch lay-up sequence on the energy absorption of the specimens were investigated experimentally. In order to reduce the test numbers, the design of experiments method was used, and the results were predicted by response surface method. The effect of repairing on the fracture parameters [stress intensity factor (SIF), J-integral, and crack propagation direction (CPD)] at the crack front was calculated using three-dimensional (3D) finite element analysis. The results show that the value of the energy absorption increases when the crack angle increases and that the patch lay-up sequence has a significant role on the efficiency of the repair. When the location of the metal layer of the patch is near the repaired surface of the specimen, the value of the energy absorption increases.

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