Change search
ReferencesLink to record
Permanent link

Direct link
Nano-Indentation of Anisotropic Material: Numerical Approaches to Extract Elasticities from Nano-Indentation
Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, Department of Energy and Process Engineering.
2013 (English)MasteroppgaveStudent thesis
Abstract [en]

Division of Biomechanics participates in a project together with Department of Cancer Research and Molecular Medicine, NTNU, on effects of proton pump inhibitor medication on bone quality. This common anti-stomach acid medication seems to result in an increased bone fragility in humans. As a step towards comparing mechanical properties at micro level, between sick and healthy bone tissue, mice femur have been tested at micro level using the increasingly popular tool, nanoindentation. Futher, an analytical finite element model has been created in an effort to increase the understanding of nanoindentation of bone. It is concluded that the experimental protocol is not accurate enough(SD ~ 5GPa for reduced Young's modulus) as a result of multiple factors, mainly indentation locations. The experimental results were compared to the finite element model. It was possible to match the data curves of the experimental tests with the analytical tests by adjusting the model parameters. Unfortunatly, this resulted in divergent results(plastic yield stress of ~ 600MPa and reduced Young's modulus of nearly 60% of the experimental data(32,45 GPa and 20GPa). As an effort to reduce the divergence between the experimental and analytical testing, multiple suggestions were made.

Place, publisher, year, edition, pages
Institutt for konstruksjonsteknikk , 2013. , 99 p.
URN: urn:nbn:no:ntnu:diva-22621Local ID: ntnudaim:10234OAI: diva2:650397
Available from: 2013-09-20 Created: 2013-09-20 Last updated: 2013-09-20Bibliographically approved

Open Access in DiVA

fulltext(4107 kB)1500 downloads
File information
File name FULLTEXT01.pdfFile size 4107 kBChecksum SHA-512
Type fulltextMimetype application/pdf
cover(388 kB)15 downloads
File information
File name COVER01.pdfFile size 388 kBChecksum SHA-512
Type coverMimetype application/pdf

By organisation
Department of Energy and Process Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 1500 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 71 hits
ReferencesLink to record
Permanent link

Direct link