Print Email Facebook Twitter Nano-indentation response of ultrahighmolecular weight polyethylene (UHMWPE) Title Nano-indentation response of ultrahighmolecular weight polyethylene (UHMWPE): A detailed analysis Author Iqbal, Tanveer (University of Engineering & Technology Lahore) Camargo, S. S. (Universidade Federal do Rio de Janeiro) Yasin, Saima (University of Engineering & Technology Lahore) Farooq, U. (TU Delft Aerospace Manufacturing Technologies) Shakeel, A. (TU Delft Rivers, Ports, Waterways and Dredging Engineering; University of Engineering & Technology Lahore) Date 2020-04-01 Abstract Nano-indentation, a depth sensing technique, is a useful and exciting tool to investigate the surface mechanical properties of a wide range of materials, particularly polymers. Knowledge of the influence of experimental conditions employed during nano-indentation on the resultant nano-mechanical response is very important for the successful design of engineering components with appropriate surface properties. In this work, nano-indentation experiments were carried out by selecting various values of frequency, amplitude, contact depth, strain rate, holding time, and peak load. The results showed a significant effect of amplitude, frequency, and strain rate on the hardness and modulus of the considered polymer, ultrahigh molecular weight polyethylene (UHMWPE). Load-displacement curves showed a shift towards the lower indentation depths along with an increase in peak load by increasing the indentation amplitude or strain rate. The results also revealed the strong dependence of hardness and modulus on the holding time. The experimental data of creep depth as a function of holding time was successfully fitted with a logarithmic creep model (R2 ≥ 0.98). In order to remove the creeping effect and the nose problem, recommended holding times were proposed for the investigated polymer as a function of different applied loads. Subject CreepHardnessModulusNano-indentationUltrahigh molecular weight polyethylene To reference this document use: http://resolver.tudelft.nl/uuid:3570bcce-d831-4e5c-99f2-542842fd8d90 DOI https://doi.org/10.3390/POLYM12040795 ISSN 2073-4360 Source Polymers, 12 (4) Part of collection Institutional Repository Document type journal article Rights © 2020 Tanveer Iqbal, S. S. Camargo, Saima Yasin, U. Farooq, A. Shakeel Files PDF polymers_12_00795_v2.pdf 3.32 MB Close viewer /islandora/object/uuid:3570bcce-d831-4e5c-99f2-542842fd8d90/datastream/OBJ/view