Experimental validation of analytical chemistry methods to evaluate the effects of peel-plies on bonded composite surfaces

Dwayne McDaniel, Tomas Pribanic, Rakesh Guduru, Lahcen Elaadil, Xiangyang Zhou, Zedong Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Research on the testing of bonds for composite materials seeks to improve the manufacturing processes essential for the development of efficient and durable composite structures. Techniques to reliably prepare and verify composite bonds surface conditions will also ensure the integrity of repairs performed in field environments. This study is aimed to develop two costeffective and practical surface analysis techniques for detecting chemical contamination on the surface of carbon fiber reinforced composites: 1) a chemical force microscope with an epoxy modified probe and 2) an all solid-state electrochemical sensor. Chemical force microscopy (CFM) can measure the surface adhesion force between the microscope probe and the substrate surface using a mode called force spectroscopy. CFM is focused on using force volume techniques for mapping adhesion force data. This technique provides a more automated and reliable method for obtaining adhesion force information. Additionally, a solid-state electrochemical sensor will be used to obtain electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) data. With the electrochemical sensor measurements, a small alternating voltage (5-10 mV) around the open circuit potential is applied, yielding a more reversible and repeatable evaluation of the surfaces and maybe a more realistic technique for infield inspections. In this phase of research, lap-shear tests were conducted on polyester and nylon prepared bonded samples to correlate the measurement results of the CFM and electrochemical sensor and the strength of the adhesive bonds. Results demonstrate that CV and EIS can detect reliable differences between the polyester and nylon prepared composite surfaces and the force volume technique offers an improved understanding of the surface adhesion forces with good correlation between adhesion force and lap-shear strength.

Original languageEnglish (US)
Title of host publication2011 SAMPE Spring Technical Conference and Exhibition - State of the Industry
Subtitle of host publicationAdvanced Materials, Applications, and Processing Technology
StatePublished - Aug 30 2011
Event2011 SAMPE Spring Technical Conference and Exhibition - State of the Industry: Advanced Materials, Applications, and Processing Technology - Long Beach, CA, United States
Duration: May 23 2011May 26 2011

Publication series

NameInternational SAMPE Technical Conference

Other

Other2011 SAMPE Spring Technical Conference and Exhibition - State of the Industry: Advanced Materials, Applications, and Processing Technology
CountryUnited States
CityLong Beach, CA
Period5/23/115/26/11

ASJC Scopus subject areas

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

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  • Cite this

    McDaniel, D., Pribanic, T., Guduru, R., Elaadil, L., Zhou, X., & Wang, Z. (2011). Experimental validation of analytical chemistry methods to evaluate the effects of peel-plies on bonded composite surfaces. In 2011 SAMPE Spring Technical Conference and Exhibition - State of the Industry: Advanced Materials, Applications, and Processing Technology (International SAMPE Technical Conference).