Ageing of composites in marine vessels

Davies, Peter; Choqueuse, Dominique

doi:10.1533/9781845694937.2.326

Cited by 10 publications

(9 citation statements)

References 31 publications

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“…7 Some researchers studied the impact of seawater aging on mechanical properties evolution of fiber-reinforced polymer (FRP) materials for marine vessels and offshore structures applications after 1 and 7 years, respectively. 8,9 However, limited work has been conducted on the long-term performance assessment of these pipes. 10,11 Particularly in the presence of surface (osmotic) blisters observed during the routine inspection of these pipes.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical determination of critical osmotic blister size affecting the strength of aged FRP seawater pipe

Abd-Elhady

Meroufel²,

Sallam

et al. 2020

Polymers and Polymer Composites

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Glass fiber-reinforced polymer (GFRP) composite pipelines are used by many industries for fluids transport including seawater for cooling. The durability of these pipes can be affected where the loss of their strength is due to the occurrence of several internal irreversible micro-damages. One of the challenges facing the integrity of these pipelines is the presence of surface defects. The present research aims to determine the critical size of osmotic blister affecting a 30- year-old seawater handling GFRP pipe. Osmotic blisters were simulated through surface notches with two different geometries and sizes. Longitudinal pipe mechanical strength was studied through tensile tests to study the effect of the surface notch size. At a certain surface notch depth, the strength of the pipe wall decreased with increasing the notch surface depth. This represents the critical value of the damage size called maximum undamaged defect size and noted d max. Damage with size below d max does not affect the strength of the pipe wall. To simulate the progressive failure of this aged composite, a 3-D finite element model was employed based on Hashin’s failure criteria.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical determination of critical osmotic blister size affecting the strength of aged FRP seawater pipe

Abd-Elhady

Meroufel²,

Sallam

et al. 2020

Polymers and Polymer Composites

View full text Add to dashboard Cite

show abstract

“…Marine manufacturing methods include manual wet lay-up and spray-up, which are well suited to woven and chopped glass fibres, and allow large areas to be covered more quickly [32]. Curing in an autoclave is uncommon; room-temperature or oven cures are lower in cost and produce higher void contents but are nonetheless used extensively in marine composite manufacturing [32]. Figure 5 produced by the U.S. Navy summarizes the differences between naval and aerospace materials and manufacturing methods, and the quality of the resulting parts.…”

Section: Manufacturing Methodsmentioning

confidence: 99%

Section: Materials Selectionmentioning

confidence: 99%

“…In marine applications, woven glass fabrics and chopped glass fibres reinforcing polyester or vinylester matrices are more common [32]. Fibre content is typically much lower than for aerospace materials at 20-40% by volume [32]. Cores of balsa wood and polyvinyl chloride (PVC) foam are common in marine applications, though racing yachts also make use of more expensive honeycomb cores [32].…”

Section: Materials Selectionmentioning

confidence: 99%

“…Fibre content is typically much lower than for aerospace materials at 20-40% by volume [32]. Cores of balsa wood and polyvinyl chloride (PVC) foam are common in marine applications, though racing yachts also make use of more expensive honeycomb cores [32].…”

Section: Materials Selectionmentioning

confidence: 99%

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