Allowable stresses in FRP marine vessels

Maunu Visuri

Research output: Book/ReportReportProfessional

Abstract

The publication consists of a literature survey of allowable stresses used in fibre-reinforced plastic (FRP) structures, and a new method for the determination of allowable stresses is presented. In the literature survey, primary attention has been paid to the marine industry (including classification societies), the aerospace industry, and to pressure vessel and pipe standards. Generally the subject is only briefly discussed in the literature. This is a drawback, since the conservatism dominating the rules used today often means unnecessary weight penalties. High factors of safety (FoS), except in the aerospace industry, are used in most designs. The short experience of structures in service, wide variety of material combinations and the rather complicated mechanical behaviour are the most important factors in this regard. The presented determination method for allowable stresses aims at introducing a more rational way for dimensioning. The method is based on the partial factors of safety concept. A statistical analysis can be included for better accuracy. This requires enough data of material and load behaviour. The method is flexible and can be tailored to various needs. One major drawback is the lack of information concerning material behaviour under long-term loads. The method is aimed to be expanded in the future.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages118
ISBN (Print)951-38-4659-8
Publication statusPublished - 1995
MoE publication typeNot Eligible

Publication series

NameVTT Publications
PublisherVTT
No.221
ISSN (Print)1235-0621
ISSN (Electronic)1455-0849

Fingerprint

Fiber reinforced plastics
Aerospace industry
Pressure vessels
Statistical methods
Pipe

Keywords

  • ships
  • structures
  • reinforced plastics
  • fiber reinforcement
  • mechanical properties
  • stresses
  • specifications
  • safety
  • aerospace industry
  • construction industry

Cite this

Visuri, M. (1995). Allowable stresses in FRP marine vessels. Espoo: VTT Technical Research Centre of Finland. VTT Publications, No. 221
Visuri, Maunu. / Allowable stresses in FRP marine vessels. Espoo : VTT Technical Research Centre of Finland, 1995. 118 p. (VTT Publications; No. 221).
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author = "Maunu Visuri",
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Visuri, M 1995, Allowable stresses in FRP marine vessels. VTT Publications, no. 221, VTT Technical Research Centre of Finland, Espoo.

Allowable stresses in FRP marine vessels. / Visuri, Maunu.

Espoo : VTT Technical Research Centre of Finland, 1995. 118 p. (VTT Publications; No. 221).

Research output: Book/ReportReportProfessional

TY - BOOK

T1 - Allowable stresses in FRP marine vessels

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N2 - The publication consists of a literature survey of allowable stresses used in fibre-reinforced plastic (FRP) structures, and a new method for the determination of allowable stresses is presented. In the literature survey, primary attention has been paid to the marine industry (including classification societies), the aerospace industry, and to pressure vessel and pipe standards. Generally the subject is only briefly discussed in the literature. This is a drawback, since the conservatism dominating the rules used today often means unnecessary weight penalties. High factors of safety (FoS), except in the aerospace industry, are used in most designs. The short experience of structures in service, wide variety of material combinations and the rather complicated mechanical behaviour are the most important factors in this regard. The presented determination method for allowable stresses aims at introducing a more rational way for dimensioning. The method is based on the partial factors of safety concept. A statistical analysis can be included for better accuracy. This requires enough data of material and load behaviour. The method is flexible and can be tailored to various needs. One major drawback is the lack of information concerning material behaviour under long-term loads. The method is aimed to be expanded in the future.

AB - The publication consists of a literature survey of allowable stresses used in fibre-reinforced plastic (FRP) structures, and a new method for the determination of allowable stresses is presented. In the literature survey, primary attention has been paid to the marine industry (including classification societies), the aerospace industry, and to pressure vessel and pipe standards. Generally the subject is only briefly discussed in the literature. This is a drawback, since the conservatism dominating the rules used today often means unnecessary weight penalties. High factors of safety (FoS), except in the aerospace industry, are used in most designs. The short experience of structures in service, wide variety of material combinations and the rather complicated mechanical behaviour are the most important factors in this regard. The presented determination method for allowable stresses aims at introducing a more rational way for dimensioning. The method is based on the partial factors of safety concept. A statistical analysis can be included for better accuracy. This requires enough data of material and load behaviour. The method is flexible and can be tailored to various needs. One major drawback is the lack of information concerning material behaviour under long-term loads. The method is aimed to be expanded in the future.

KW - ships

KW - structures

KW - reinforced plastics

KW - fiber reinforcement

KW - mechanical properties

KW - stresses

KW - specifications

KW - safety

KW - aerospace industry

KW - construction industry

M3 - Report

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Visuri M. Allowable stresses in FRP marine vessels. Espoo: VTT Technical Research Centre of Finland, 1995. 118 p. (VTT Publications; No. 221).