skip to main content

DOE PAGESDOE PAGES

Title: Measurements of Mode I Interlaminar Properties of Carbon Fiber Reinforced Polymers Using Digital Image Correlation

Numerical models based on cohesive zones are usually used to model and simulate the mechanical behavior of laminated carbon fiber reinforced polymers (CFRP) in automotive and aerospace applications and require different interlaminar properties. This work focuses on determining the interlaminar fracture toughness (G IC) under Mode I loading of a double cantilever beam (DCB) specimen of unidirectional CFRP, serving as prototypical material. The novelty of this investigation is the improvement of the testing methodology by introducing digital image correlation (DIC) as an extensometer and this tool allows for crack growth measurement, phenomenological visualization and quantification of various material responses to Mode I loading. Multiple methodologies from different international standards and other common techniques are compared for the determination of the evolution of G IC as crack resistance curves (R-curves). The primarily metrological sources of uncertainty, in contrast to material specific related uncertainties, are discussed through a simple sensitivity analysis. Additionally, the current work offers a detailed insight into the constraints and assumptions to allow exploration of different methods for the determination of material properties using the DIC measured data. The main aim is an improvement of the measurement technique and an increase in the reliability of measured data during staticmore » testing, in advance of future rate dependent testing for crashworthiness simulations.« less
Authors:
 [1] ;  [2] ;  [2]
  1. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Automotive Lightweighting (NCAL)
  2. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Automotive Lightweighting (NCAL); Univ. of Maryland, College Park, MD (United States). Dept. of Materials Science and Engineering
Publication Date:
Grant/Contract Number:
EE0006867
Type:
Accepted Manuscript
Journal Name:
Key Engineering Materials (Online)
Additional Journal Information:
Journal Name: Key Engineering Materials (Online); Journal Volume: 742; Journal ID: ISSN 1662-9795
Research Org:
Ford Motor Company, Dearborn, MI (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 47 OTHER INSTRUMENTATION; R-curve; crack tip tracking; fracture toughness; DIC; DCB; Standards; Metrology; PMC
OSTI Identifier:
1431199

Merzkirch, Matthias, Ahure Powell, Louise, and Foecke, Tim. Measurements of Mode I Interlaminar Properties of Carbon Fiber Reinforced Polymers Using Digital Image Correlation. United States: N. p., Web. doi:10.4028/www.scientific.net/KEM.742.652.
Merzkirch, Matthias, Ahure Powell, Louise, & Foecke, Tim. Measurements of Mode I Interlaminar Properties of Carbon Fiber Reinforced Polymers Using Digital Image Correlation. United States. doi:10.4028/www.scientific.net/KEM.742.652.
Merzkirch, Matthias, Ahure Powell, Louise, and Foecke, Tim. 2017. "Measurements of Mode I Interlaminar Properties of Carbon Fiber Reinforced Polymers Using Digital Image Correlation". United States. doi:10.4028/www.scientific.net/KEM.742.652. https://www.osti.gov/servlets/purl/1431199.
@article{osti_1431199,
title = {Measurements of Mode I Interlaminar Properties of Carbon Fiber Reinforced Polymers Using Digital Image Correlation},
author = {Merzkirch, Matthias and Ahure Powell, Louise and Foecke, Tim},
abstractNote = {Numerical models based on cohesive zones are usually used to model and simulate the mechanical behavior of laminated carbon fiber reinforced polymers (CFRP) in automotive and aerospace applications and require different interlaminar properties. This work focuses on determining the interlaminar fracture toughness (GIC) under Mode I loading of a double cantilever beam (DCB) specimen of unidirectional CFRP, serving as prototypical material. The novelty of this investigation is the improvement of the testing methodology by introducing digital image correlation (DIC) as an extensometer and this tool allows for crack growth measurement, phenomenological visualization and quantification of various material responses to Mode I loading. Multiple methodologies from different international standards and other common techniques are compared for the determination of the evolution of GIC as crack resistance curves (R-curves). The primarily metrological sources of uncertainty, in contrast to material specific related uncertainties, are discussed through a simple sensitivity analysis. Additionally, the current work offers a detailed insight into the constraints and assumptions to allow exploration of different methods for the determination of material properties using the DIC measured data. The main aim is an improvement of the measurement technique and an increase in the reliability of measured data during static testing, in advance of future rate dependent testing for crashworthiness simulations.},
doi = {10.4028/www.scientific.net/KEM.742.652},
journal = {Key Engineering Materials (Online)},
number = ,
volume = 742,
place = {United States},
year = {2017},
month = {7}
}