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Author

Tejas G. Murthy

Other affiliations: Purdue University
Bio: Tejas G. Murthy is an academic researcher from Indian Institute of Science. The author has contributed to research in topics: Granular material & Indentation. The author has an hindex of 13, co-authored 54 publications receiving 741 citations. Previous affiliations of Tejas G. Murthy include Purdue University.


Papers
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TL;DR: In this paper, a series of undrained monotonic triaxial compression tests were performed on Ottawa sand containing 0, 5, 10% and 15% of non-plastic silt.
Abstract: A series of undrained monotonic triaxial compression tests were performed on Ottawa sand containing 0%, 5%, 10% and 15% of non-plastic silt. The paper focuses on distinctive states of the monotonic undrained response of sands, namely the critical state, the phase transformation state, the quasi-steady state, and the state of undrained instability (onset of flow liquefaction). Specimens were prepared using slurry deposition and moist tamping to investigate the effect of the initial sand fabric on these states. It was observed that an increase in the non-plastic fines content leads to a downward shift of the critical-state line in the void ratio–mean effective stress space and to an increase of the critical-state friction angle. The present data suggest that the initial fabric of the sand appears to have a significant effect on the undrained behaviour in the early stages of shearing, with its influence vanishing at large strains. Moist-tamped specimens demonstrate considerably larger undrained instability s...

230 citations

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TL;DR: In this article, the deformation field in machining was controlled to access a range of deformation parameters, enabling a study of the interactive effects of the parameters on microstructure and strength properties.

141 citations

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TL;DR: In this paper, the role of nanotwin lamellae in enhancing thermal stability of nanostructured materials is examined, which suggests an interfacial engineering approach to enhancing the stability of alloys.
Abstract: The role of nanotwin lamellae in enhancing thermal stability of nanostructured materials is examined. Nanostructured copper with varying densities of twins was generated by controlling the deformation strain rate during severe plastic deformation at cryogenic temperatures. While the nanostructured materials produced under cryogenic conditions are characteristically unstable even at room temperatures, their stability is markedly improved when a dense dispersion of nanotwins is introduced. Observations of the role of nanotwins in pinning grain and subgrain structures suggest an interfacial engineering approach to enhancing the stability of nanostructured alloys.

56 citations

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TL;DR: In this article, the effect of consolidation on the undrained bearing capacity of both rough and smooth strip and circular surface foundations is investigated, examining the influence of the magnitude and duration of an applied preload and the initial over-consolidation ratio of the deposit.
Abstract: The effect of consolidation on the undrained bearing capacity of both rough and smooth strip and circular surface foundations is investigated, examining the influence of the magnitude and duration of an applied preload and the initial over-consolidation ratio of the deposit. The investigation comprised small strain finite-element analysis, with the soil response represented by Modified Cam Clay. The results are distilled into dimensionless and generalised forms, from which simple trends emerge. Based on these results, a simple method for predicting the consolidated undrained bearing capacity is proposed.

54 citations

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TL;DR: The 1st International Workshop on Bio-Inspired Geotechnics as mentioned in this paper was held in 2019 in Pacific Grove, California, USA, with a focus on bio-inspired geotechnical applications.
Abstract: This paper is the product of the 1st International Workshop on Bio-Inspired Geotechnics, held in May 2019 in Pacific Grove, California, USA. The 1st International Workshop on Bio-inspired Geotechnics was funded in part by the US National Science Foundation under Grant No. CMMI-1821029 and the NSF-funded Center for Biomediated and Bioinspired Geotechnics (CBBG) under Grant No. EEC-1449501. Any opinions, findings and conclusions or recommendations expressed in these materials are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

54 citations


Cited by
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Journal ArticleDOI
TL;DR: A three-year study by the CIRP's Collaborative Working Group on Surface Integrity and Functional Performance of Components as discussed by the authors reported recent progress in experimental and theoretical investigations on surface integrity in material removal processes.

769 citations

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TL;DR: In this article, the state-of-the-art in predictive performance models for machining operations is presented, and a critical assessment of the relevant modelling techniques and their applicability and/or limitations for the prediction of the complex machining operation performed in industry.

622 citations

Journal ArticleDOI
01 Aug 1963-Nature
TL;DR: Chalmers as discussed by the authors presents a review of progress in metal physics, including the first publication of the progress in materials science journal Progress in Materials Science Vol. 9, No. 9.
Abstract: Progress in Materials Science Vol. 9. Edited by Dr. Bruce Chalmers. (Incorporating “Progress in Metal Physics”, Volumes 1–8.) Pp. 389. (London and New York: Pergamon Press, 1961.) 120s. net; 20 dollars.

295 citations

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TL;DR: In this article, the microstructural response and grain subdivision process in commercially pure (CP) titanium subjected to multiple laser shock peening (LSP) impacts were investigated by means of optical microscopy (OM), scanning electron microscopy and transmission electron microscope (TEM) observations.

253 citations