scholarly journals Mechanical Characterization of Compact Rolled‐up Microtubes using In‐situ Scanning Electron Microscopy Nanoindentation and Finite Element Analysis

2021 ◽  
Author(s):  
Somayeh Moradi ◽  
Nathanael Jöhrmann ◽  
Dmitriy D. Karnaushenko ◽  
Uwe Zschenderlein ◽  
Daniil Karnaushenko ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Characterization ◽  
Element Analysis ◽  
Scanning Electron

scholarly journals Mechanical Characterization of Compact Rolled‐up Microtubes Using In Situ Scanning Electron Microscopy Nanoindentation and Finite Element Analysis

2021 ◽  
Vol 23 (8) ◽  
pp. 2170031
Author(s):  
Somayeh Moradi ◽  
Nathanael Jöhrmann ◽  
Dmitriy D. Karnaushenko ◽  
Uwe Zschenderlein ◽  
Daniil Karnaushenko ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Characterization ◽  
Element Analysis ◽  
Scanning Electron

scholarly journals Design and Characterization of Microscale Auxetic and Anisotropic Structures Fabricated by Multiphoton Lithography

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 446
Author(s):  
Ioannis Spanos ◽  
Zacharias Vangelatos ◽  
Costas Grigoropoulos ◽  
Maria Farsari
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mechanical Performance ◽  
Element Analysis ◽  
Mechanical Responses ◽  
Multiphoton Lithography ◽  
Anisotropic Structures ◽  
Scanning Electron

The need for control of the elastic properties of architected materials has been accentuated due to the advances in modelling and characterization. Among the plethora of unconventional mechanical responses, controlled anisotropy and auxeticity have been promulgated as a new avenue in bioengineering applications. This paper aims to delineate the mechanical performance of characteristic auxetic and anisotropic designs fabricated by multiphoton lithography. Through finite element analysis the distinct responses of representative topologies are conveyed. In addition, nanoindentation experiments observed in-situ through scanning electron microscopy enable the validation of the modeling and the observation of the anisotropic or auxetic phenomena. Our results herald how these categories of architected materials can be investigated at the microscale.

ENGINEERING ANALYSIS OF A FAILED COMPASS PROXIMAL INTERPHALANGEAL (PIP) JOINT HINGE

2015 ◽  
Vol 27 (02) ◽  
pp. 1550013 ◽  
Author(s):  
M. M. Youssef ◽  
D. E. T. Shepherd ◽  
O. G. Titley
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Maximum Principal Stress ◽  
Engineering Analysis ◽  
Principal Stresses ◽  
Element Analysis ◽  
Pip Joint ◽  
Scanning Electron

A failed compass hinge external fixator for fingers has been analyzed. The device consists of polymer parts manufactured from polyetherimide. Finite element analysis (FEA) was used to investigate the principal stresses in the device under different loading conditions. Scanning electron microscopy (SEM) was used to investigate the fracture surfaces. The FEA showed that the maximum principal stress was greater than the fatigue strength of polyetherimide. The SEM fractographs confirm that failure was by brittle fatigue.

Sign in / Sign up

Export Citation Format

Share Document