The effects of bondline thicknesses (0.17 & 0.25-mm) and scarf angles (5° & 10°) on the tensile and fatigue properties are investigated, for the first time, for carbon-fiber/epoxy composites scarf adhesive joints (SAJs) modified with optimum weight percentages of multi-walled carbon nanotubes (CNTs). New experimental/analytical model was developed to measure the adhesive displacement parallel to the adherend surface (Δux) using instrumented specimens with extensometer and strain-gauge. The measured values of Δux were used to determine the deformations, normal stresses, in-plane shear stresses and Young’s moduli of the adhesive layers in the SAJs under tensile loads. Results from tensile tests showed remarkable increase in apparent and local stiffnesses for the SAJs with CNT-adhesive, 0.17-mm bondline thickness and 10°-scarf angle. The Young’s moduli of the adhesive layers of the 5°-SAJs is about 2–3.2 times higher than that of bulk adhesives. The tensile strength of CNT-SAJs is 15.9–33% higher than that of the neat-SAJs with different bondline thicknesses and scarf angles. On the other hand, CNTs have marginal effect on the fatigue strength at lower lives and insignificant effect at fatigue limits (107-cycles). The fatigue strength/life of the SAJs was improved with decreasing scarf angle from 10° to 5° and bondline thickness from 0.25-mm to 0.17-mm.
Composite Structures – Elsevier
Published: Jan 15, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera