A methodology for the rapid characterization of Mode II delamination fatigue threshold in FRP composites

Giuseppe Pitarresi, Giuseppe Catalanotti, Tommaso Scalici

Risultato della ricerca: Article

Abstract

A new methodology to measure the Mode II interlaminar fracture in fatigue for FRP composites is developed. The proposed methodology uses a Modified Transvers Crack Tensile (MTCT) specimen and is able to characterize the near threshold behavior in a robust, easier and significantly faster way than standard procedures. Analytical formulae, able to link the crack growth rate to the load or strain amplitudes, were found and verified, and their importance was explained, in particular, for what concerns the characterisation of the near threshold behavior. Experiments were performed both in load and strain control, while the delamination growth was monitored using different techniques including the Thermoelastic Stress Analysis (TSA). Experiments showed the reliability and effectiveness of the proposed procedure, and evidence its suitability and compatibility with current industrial material testing and qualification protocols with particular emphasis to industrial environment where a "no growth" design approach is employed.
Lingua originaleEnglish
Numero di pagine11
RivistaEngineering Fracture Mechanics
Volume220
Stato di pubblicazionePublished - 2019

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Delamination
Fatigue of materials
Strain control
Materials testing
Composite materials
Stress analysis
Crack propagation
Loads (forces)
Experiments
Cracks

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cita questo

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title = "A methodology for the rapid characterization of Mode II delamination fatigue threshold in FRP composites",
abstract = "A new methodology to measure the Mode II interlaminar fracture in fatigue for FRP composites is developed. The proposed methodology uses a Modified Transvers Crack Tensile (MTCT) specimen and is able to characterize the near threshold behavior in a robust, easier and significantly faster way than standard procedures. Analytical formulae, able to link the crack growth rate to the load or strain amplitudes, were found and verified, and their importance was explained, in particular, for what concerns the characterisation of the near threshold behavior. Experiments were performed both in load and strain control, while the delamination growth was monitored using different techniques including the Thermoelastic Stress Analysis (TSA). Experiments showed the reliability and effectiveness of the proposed procedure, and evidence its suitability and compatibility with current industrial material testing and qualification protocols with particular emphasis to industrial environment where a {"}no growth{"} design approach is employed.",
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TY - JOUR

T1 - A methodology for the rapid characterization of Mode II delamination fatigue threshold in FRP composites

AU - Pitarresi, Giuseppe

AU - Catalanotti, Giuseppe

AU - Scalici, Tommaso

PY - 2019

Y1 - 2019

N2 - A new methodology to measure the Mode II interlaminar fracture in fatigue for FRP composites is developed. The proposed methodology uses a Modified Transvers Crack Tensile (MTCT) specimen and is able to characterize the near threshold behavior in a robust, easier and significantly faster way than standard procedures. Analytical formulae, able to link the crack growth rate to the load or strain amplitudes, were found and verified, and their importance was explained, in particular, for what concerns the characterisation of the near threshold behavior. Experiments were performed both in load and strain control, while the delamination growth was monitored using different techniques including the Thermoelastic Stress Analysis (TSA). Experiments showed the reliability and effectiveness of the proposed procedure, and evidence its suitability and compatibility with current industrial material testing and qualification protocols with particular emphasis to industrial environment where a "no growth" design approach is employed.

AB - A new methodology to measure the Mode II interlaminar fracture in fatigue for FRP composites is developed. The proposed methodology uses a Modified Transvers Crack Tensile (MTCT) specimen and is able to characterize the near threshold behavior in a robust, easier and significantly faster way than standard procedures. Analytical formulae, able to link the crack growth rate to the load or strain amplitudes, were found and verified, and their importance was explained, in particular, for what concerns the characterisation of the near threshold behavior. Experiments were performed both in load and strain control, while the delamination growth was monitored using different techniques including the Thermoelastic Stress Analysis (TSA). Experiments showed the reliability and effectiveness of the proposed procedure, and evidence its suitability and compatibility with current industrial material testing and qualification protocols with particular emphasis to industrial environment where a "no growth" design approach is employed.

KW - Fatigue

KW - Fibre reinforced composites

KW - Mode II fracture toughness

KW - Paris law

KW - Transverse crack tensile specimen

UR - http://hdl.handle.net/10447/377973

UR - http://www.journals.elsevier.com/engineering-fracture-mechanics/

M3 - Article

VL - 220

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

SN - 0013-7944

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