Mechanical behavior of patched steel panels at elevated temperatures

S Surendran()
G L Manjunath()
S K Lee()

Abstract


Preventive maintenance is an accepted practice in engineering to keep the structural reliability of ship hulls at the highest possible level. Designers ensure a longer period in between the consecutive maintenance of ship hull parts to optimize expenditure. This is relevant in view of the difficulty in reaching farthest corners in ballast tanks, fuel storage tanks, cofferdams etc. Prior maintenance of the deck and hull parts save a considerable amount of the owner’s budget.A portable technology like patching becomes more handy and economic. Performance of both unpatched and patched samples during dynamic loading conditions being examined in the present investigation. The high strength steel panels with a dimension of 70mm×15mm×3mm were edge cracked for lengths of 4mm and 7mm, with width of 1mm for both. The edge cracked high strength steel panels are repaired with composite patches using GFRP (glass fiber reinforced plastic), CFRP (carbon fiber reinforced plastic) and AFRP (aramid fiber reinforced plastic). The patching was done by 3 and 5 layered and impact tested by Charpy impact tester at ranges of high temperatures. The amount of energy absorbed in the impact is converted to dynamic fracture toughness values and compared for evaluating the performance of FRP (fiber reinforced plastics). Finite element analysis was done for evaluating the stress intensity factors at different types of patching and testing conditions. Comparatively the AFRP patched samples showed better dynamic fracture toughness values at different temperatures.

Keywords


fracture toughness; de-bonding; crack tip; bridging of crack; finite element analysis; stress intensity factor

Full Text:

PDF

References


Anderson T L. Fracture mechanics fundamentals and its application, CRC Press; 1995.

ASTM D 2093, Standard practice for preparation of surfaces of plastics prior to adhesive bonding. In: Annual book of American society for testing materials, 2001, 15.06.

Barsom J M, Rolfe S T, 1970. Correlation between K1C Charpy notch test results in the transition temperature range. ASTM STP 466, pp. 281–302.

Wawrzynek P, Ingraffea A. http://www.cfg.cornell.edu/software/Current%20Docs/F2D_V3.1.pdf. 1993.

Hahn G T, Hoagland R G, Kanninen M F, Rosenfield A R and Sejnoha R.Fast fracture resistance and crack arrest in structural steels, by Battelle Memorial Institute under Department of the Navy Naval Ship Engineering Center Contract No. NOO024-72-C-5142.SSC-242, 1973.

Hahn G T, Hoagland R G, and Rosenfield A R. Dynamic crack propagation and arrest in structural steel, by Battelle Memorial Institute under Department of the Navy Naval Ship Engineering Center Contract No. NOO024-72-C-5142.SSC-256, 1976.

Eric Greene. Marine Composites investigation of fiberglass reinforced plastics in marine structures, Distribution available from National Technical Information Service, Springfield, VA 22161(703) 487-4650.SSC-360, 1990.

Gallion K A. Structural Maintenance Project Volume 3, Distribution available from National Technical Information Service, Springfield, VA 22161 (703) 487-4650. SSC-386, 1992.

Grubbs, Kim and Zanis, Charles. Underwater Repair Procedures for Ship Hulls (Fatigue and Ductility of Underwater Wet Welds), Distribution available from National Technical Information Service, Springfield, VA 22161 (703) 487-4650.SSC-370, 1993.

Dale G. Karr and Anthony Waas (SSC-1469, 2007), Strength and Fatigue Testing of Composite Patches for Ship Plating Fracture Repair, Distribution available from National Technical Information Service, Springfield, VA 22161 (703) 487-4650.

Ge (George) Wang, ABS Corporate Technology. Criteria for Determining Fracture Repair Procedures, Distribution available from National Technical Information Service, Springfield, VA 22161 (703) 487-4650.SSC-SR 1459, 2011.

Baker AA. Repair of cracked or defective metallic components with advanced fiber composites an overview of Australian work. Composite Structure 2 (1984) 153–81.

Baker AA, Jones R Bonded repair of aircraft structures, Kluwer Academic Publishers; 1988.

Baker AA. Bonded composite repair for fatigue-cracked primary aircraft structure. Composite Structure 74 (1999) 431–43.

Hosseini-Toudeshky H, Mohammadi B, and Daghyani H R. Mixed-mode fracture analysis of aluminum repaired panels using composite patches. Composite Science Technology 66 (2006) 188–98.

Hosseini-Toudeshky H, Sadeghi G, and Daghyani H R. Experimental fatigue crack growth and crack-front shape analysis of asymmetric repaired aluminum panels with glass/epoxy composite patches. Composite Structure 71 (2005) 401–6.

Xiong J J and Shenoi R A. Integrated experimental screening of bonded composites patch repair schemes to notched aluminum-alloy panels based on static and fatigue strength concepts. Composite Structure 83 (2008) 266–72.

Nicholas G. Tsouvalis, Lazarus S. Mirisiotisand Dimitris N. Dimou. Experimental and numerical study of the fatigue behavior of composite patch reinforced cracked steel plates. International Journal of Fatigue 31 (2009) 1613–1627.

Khalili S M R, Ghadjar R, Sadeghinia M and Mittal R K. An experimental study on the Charpy impact response of cracked aluminum plates repaired with GFRP or CFRP composite patches. Composite Structures 89 (2009) 270–274.

Khalili, S M R, M Shiravi and A S Noorani. Mechanical behavior of notched plate repaired with polymer composite and smart patches-experimental study. Journal of Reinforced Plastics and Composites 29.19 (2010): 3021-3037.

Emin Ergun, Süleyman Tasgetiren and Muzaffer TopçuFatigue and fracture analysis of an aluminum plate with composite patches under the hygrothermal effect. Composite Structures 92 (2010) 2622–2631.

Megueni.A, Tounsi A, Bachir Bouiadjra B and Serie B. The effect of a bonded hygrothermal aged composite patch on the stress intensity factor for repairing cracked metallic structures. Composite Structures 62 (2003) 171–176.

Megueni. A Tounsi A and Bedia E. Evolution of the stress intensity factor for patched crack with a bonded hygrothermal aged composite repair. Materials and Design 28 (2007) 287–293.

Ouinas D, Sahnoune M, Benderdouche N and Bachir Bouiadjra B. Stress intensity factor analysis for notched cracked structure repaired by composite patching. Materials and Design30(2009) 2302–2308.

Ouinas D, Bachir Bouiadjra B, Houri S, Benderdouche N. Progressive edge cracked aluminum plate repaired with an adhesively bonded composite patch under full-width disbond. Composites: Part B43 (2012) 805–811.

Reagan L, Bachir Bouiadjra B, Belhouari M, Madani K, Server B, and Feaugas X. Effect of composite hygrothermal aging on the SIF variation in bonded composite repair of aircraft structures. Journal of Reinforced Plastics and Composites 29 (24) 3631–3636, 2010.

Manjunath G L and Surendran S. Dynamic fracture toughness of aluminum 6063 with multi-layered composite patching at lower temperatures. Ships and Offshore Structures 8.2 (2013) 163-175.

Pereira J M, GhasemnejadH, Wen J X, Tam V H Y. Blast response of cracked steel box structures repaired with carbon fiber-reinforced polymer composite patch. Materials &Design 32.5 (2011): 3092-3098.

Ouinas D, Achour B, B BBouiadjra, Taghezout N. The optimization thickness of single/double composite patch on the stress intensity factor reduction. Journal of Reinforced Plastics and Composites 32.9 (2013): 654-663.


Refbacks

  • There are currently no refbacks.


Copyright (c) 2019 S Surendran, G L Manjunath, S K Lee

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.