We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Poisson's ratio of eTPU molded bead foams in compression via in situ synchrotron X-ray microtomography.
- Authors
Singaravelu, Arun Sundar S.; Williams, Jason J.; Shevchenko, Pavel; Ruppert, Jasmin; De Carlo, Francesco; Henderson, Mark; Holmes, Chris; Chawla, Nikhilesh
- Abstract
In situ synchrotron X-ray microtomography was used to characterize the bulk deformation behavior by computing the Poisson's ratio of expanded thermoplastic polyurethane (eTPU) molded bead foams used in footwear midsole during compression. Quantitative data on morphological characteristics were obtained using an iterative image processing workflow. Image correlation on the 4D datasets using DVC was performed to calculate the volumetric and axial strain to estimate the Poisson ratio. Strain maps from DVC showed the influence of variability in ligament thickness distribution on the global mechanical behavior exhibited which dominated the response seen in these bead foams. Finally, our results showed a strong correlation between Poisson ratio and distribution of ligament thickness in foams.
- Subjects
X-ray computed microtomography; POISSON'S ratio; FOAM; IMAGE processing; SYNCHROTRONS; POISSON distribution
- Publication
Journal of Materials Science, 2021, Vol 56, Issue 22, p12920
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-021-06103-w