Results 61 to 70 of about 204,727 (297)

Mechanically, the shoot apical meristem of Arabidopsis behaves like a shell inflated by a pressure of about 1 MPa

Frontiers in Plant Science, 2015
In plants, the shoot apical meristem contains the stem cells and is responsible for the generation of all aerial organs. Mechanistically, organogenesis is associated with an auxin-dependent local softening of the epidermis.
Léna eBeauzamy, Marion eLouveaux, Olivier eHamant, Arezki eBoudaoud   +3 more
doaj   +1 more source

Sandwich composites impact and indentation behaviour study [PDF]

, 2013
In order to better exploit the natural cork available in Algeria, an experimental characterisation of a jute/epoxy–cork sandwich material to impact and indentation was undertaken.
Bezzazi, Boudjema, Bouvet, Christophe, Hachemane, Belkacem, Zitoune, Redouane   +3 more
core   +2 more sources

Study on Damage of 4H-SiC Single Crystal through Indentation and Scratch Testing in Micro–Nano Scales

Applied Sciences, 2020
In this paper, a series of indentation tests in which the maximum normal force ranged from 0.4 to 3.3 N were carried out to determine the fracture toughness of 4H-SiC single crystals.
Peng Chai, Shujuan Li, Yan Li, Xincheng Yin   +3 more
doaj   +1 more source

Application of the Upper Bound Theorem to indentation processes with tilted punch by means of Modular Model [PDF]

, 2015
Nowadays, the indentation processes are resuming it importance due to the new deformation processes that are being developed, as the Incremental Forming Process (IFP) or the Localized-Incremental Forming Process (LIFP) [1].
Bermudo Gamboa, Carolina, Martín-Fernández, Francisco de Sales, Sevilla-Hurtado, Lorenzo   +2 more
core   +1 more source

Numerical investigation on rock fragmentation during indentation with a conical pick based on discrete element method

Energy Exploration & Exploitation
This article investigates the fragmentation of rock during the indentation process with a conical pick. The study explores the impact of indentation dip angle, indentation spacing, and confining pressure on rock fragmentation through simulation using the
Xuefeng Li, Shibo Wang, Yu Chen
doaj   +1 more source

Effect of Velocity and Contact Stress Area on the Dynamic Behavior of the Spinal Cord Under Different Testing Conditions

Frontiers in Bioengineering and Biotechnology, 2022
Knowledge of the dynamic behavior of the spinal cord under different testing conditions is critical for our understanding of biomechanical mechanisms of spinal cord injury. Although velocity and contact stress area are known to affect external mechanical
Chen Jin, Rui Zhu, Meng-lei Xu, Liang-dong Zheng, Hui-zi Zeng, Ning Xie, Li-ming Cheng   +6 more
doaj   +1 more source

The tonometric sensor, a new device for the measurement of intraocular pressure [PDF]

, 1989
In this paper we present a new sensor for the measurement of intraocular pressure. We have applied the indentation principle, in which the eye is indented by exerting a force on it, while the size of the indented area is monitored.
Bergveld, P., Besten, C. den, Voorthuyzen, J.A.   +2 more
core   +3 more sources

Nanometer-resolved mechanical properties around GaN crystal surface steps

Beilstein Journal of Nanotechnology, 2014
The mechanical properties of surfaces and nanostructures deviate from their bulk counterparts due to surface stress and reduced dimensionality. Experimental indentation-based techniques present the challenge of measuring these effects, while avoiding ...
Jörg Buchwald, Marina Sarmanova, Bernd Rauschenbach, Stefan G. Mayr   +3 more
doaj   +1 more source

An investigation of nanoindentation tests on the single crystal copper thin film via an AFM and MD simulation [PDF]

, 2007
Nanoindentation tests performed in an atomic force microscope have been utilized to directly measure the mechanical properties of single crystal metal thin films fabricated by the vacuum vapor deposition technique. Nanoindentation tests were conducted at
Cheng, K, Huo, D, Liang, Y
core  

Nanoelectromechanics of Piezoresponse Force Microscopy

, 2004
To achieve quantitative interpretation of Piezoresponse Force Microscopy (PFM), including resolution limits, tip bias- and strain-induced phenomena and spectroscopy, analytical representations for tip-induced electroelastic fields inside the material are
A.L. Kholkin, D. Berlincourt, E. Karapetian, E. Karapetian, E. Karapetian, Edgar Karapetian, J.D. Jackson, Mark Kachanov, N.N. Lebedev, S. Timoshenko, Sergei V. Kalinin, T.Y. Zhang, V.I. Fabrikant, V.I. Fabrikant, W. Chen, W.R. Smythe, Y. Xu   +16 more
core   +1 more source