PROGRESSIVE FAILURE PREDICTION OF PINNED JOINT IN QUASI-ISOTROPIC LAMINATES USED IN PIPELINES

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AMR A. ABD-ELHADY, Dr.
MUHAMMAD A. MUBARAKI, Dr.
HOSSAM EL-DIN SALLAM

Abstract

TO SIMULATE THE PROGRESSIVE FAILURE OF PINNED JOINT IN QUASI-ISOTROPIC [0/45/-45/90]S GLASS FIBER REINFORCED POLYMER (GFRP) COMPOSITE LAMINATES USED IN PIPELINE, 3-D FINITE ELEMENT MODEL IS EMPLOYED IN THE PRESENT WORK. HASHIN FAILURE CRITERION AS A PROGRESSIVE DAMAGE MODEL ASSOCIATED WITH VIRTUAL-CRACK-CLOSING-TECHNIQUE (VCCT) DELAMINATION MODEL HAS BEEN ADOPTED TO PREDICATE THE FAILURE DUE TO FIBER BREAKAGE, MATRIX CRACKING AND DELAMINATION IN COMPOSITE PINNED JOINT. THIS TECHNIQUE MAY BE AN INNOVATION FOR THIS PAPER. W/D HAS BEEN CHANGED TO GET DIFFERENT MODES OF FAILURE, I.E. TENSION, SHEAR-OUT AND BEARING FAILURES, IN COMPOSITE PINNED JOINT,. THE FAILURE MODE FOR GFRP COMPOSITE PINNED JOINT HAS BEEN PREDICTED FINALLY AFTER PREDICTION THE FAILURE AT EACH PLY LAMINATE OF STACKING SEQUENCE [0/45/-45/90]S. AN EXPERIMENTAL WORK OF PINNED JOINT IN QUASI-ISOTROPIC GFRP COMPOSITE LAMINATES HAS BEEN CONDUCTED TO VALIDATE THE PRESENT NUMERICAL RESULTS. THE NUMERICAL AND EXPERIMENTAL RESULTS SHOWED AN AGREEMENT BETWEEN THEM. THEREFORE, THE PRESENT 3D FINITE ELEMENT MODEL CAN BE CONSIDERED AS A GOOD CANDIDATE TO EXPECT THE PROGRESSIVE DAMAGE IN COMPOSITE PINNED JOINTS.

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Author Biography

HOSSAM EL-DIN SALLAM, Civil Engineering Department, Jazan University, Jazan, KSA; on sabbatical leave from Materials Engineering Department, Zagazig University, Zagazig, Egypt

Professor Hossam El-Din M. Sallam Completed his B.Sc in Civil Engineering at Zagazig University in 1985 and received his M.Sc. and Ph.D. degrees in Materials Engineering from Zagazig University. He was a visiting Ass. Prof. for two years in Northeastern University, Boston, USA.

He has served as a Teaching Assistant, Assistant Professor, Associate Professor and full professor in 2004 at Zagazig University. Recently he appointed as Professor at the department of Civil Engineering, Jazan University, KSA.

Since 1990 his research has focused on several issues including fatigue, fracture mechanics, failure analysis, repair and strengthening of structures, advanced composite materials, nanocomposites, and special concretes. He taught several under- and post-graduate courses in Civil and Mechanical engineering at several Universities.
Prof. Sallam supervised a number of graduate students at Civil and Mechanical Engineering in addition to Dentist Materials (more than 30 theses and greater than 100 scientific papers).

Prof. Sallam is a reviewer in several Societies and Publishers such as ACI, RILEM, ICE, KACST, Techno-Press, EJSE, ScienceDirect, Academic Journals, Science Alert.

Prof. Sallam is a member in the following Committees:
Committee No. 50 for Structural & Construction Engineering, Egyptian Universities Promotion Committees (EUPC), Supreme Council of Universities (SCU).
The Examination Committee of the submitted Scientific Production for the State Incentive Awards in Engineering Sciences 2008, General Administration of Awards & Incentives, Academy of Scientific Research & Technology, Egypt.