Finite element analysis of the mechanical properties of cellular aluminium based on micro-computed tomography

X-ray micro-computed tomography (microCT) allows us to construct three-dimensional images of specimens at the micron scale in a non-destructive manner. The digital nature of the microCT images, which are in voxel form, make them ideal candidates for use in numerical modeling and simulation [1]. Finite element analysis (FEA) is a well-known technique for modeling the structural response of a system to mechanical loading, and is most useful in modeling complex systems which cannot be analyzed analytically. MicroCT datasets can be converted into finite element models, directly incorporating both the geometry of the specimen and information about the different materials in it. This method is known as micro-finite element analysis (microFEA). It is especially useful in the study of materials with complex microstructures.

Download Full-text

Predicting mouse vertebra strength with micro-computed tomography-derived finite element analysis

BoneKEy Reports ◽

10.1038/bonekey.2015.31 ◽

2015 ◽

Vol 4 ◽

Cited By ~ 15

Author(s):

Jeffry S Nyman ◽

Sasidhar Uppuganti ◽

Alexander J Makowski ◽

Barbara J Rowland ◽

Alyssa R Merkel ◽

...

Keyword(s):

Computed Tomography ◽

Finite Element Analysis ◽

Finite Element ◽

Micro Computed Tomography ◽

Element Analysis

Download Full-text

Reproducibility of Bone Microstructure and Stiffness Measurements in Rats by In Vivo Micro Computed Tomography and Finite Element Analysis

ASME 2012 Summer Bioengineering Conference, Parts A and B ◽

10.1115/sbc2012-80777 ◽

2012 ◽

Author(s):

Shenghui Lan ◽

Abhishek Chandra ◽

Ling Qin ◽

X. Sherry Liu

Keyword(s):

Computed Tomography ◽

Mechanical Properties ◽

Finite Element ◽

Recent Decade ◽

Micro Computed Tomography ◽

Element Analysis ◽

3 Dimensional ◽

Bone Changes ◽

Μct Scan

Micro computed tomography (μCT) has been widely used to study 3-dimensional (3D) microstructure of bone specimens. In the recent decade, in vivo μCT scanners have become available to monitor longitudinal bone changes in rodents (1,2). The current in vivo μCT scan can obtain images with an isotropic voxel size up to 10.5 μm, which is high enough for direct 3D bone microstructural analyses. Moreover, based on these high-resolution images, micro finite element (μFE) models can be generated to estimate mechanical properties of bone. Therefore, by using in vivo μCT imaging and μFE analysis techniques, changes in geometry, microstructure, and mechanical properties of rodent bone, in response to either diseases or treatments, can be visualized and quantified over time.

Download Full-text

Nanoindentation Properties and Finite Element Analysis of the Rostrum of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae)

Microscopy and Microanalysis ◽

10.1017/s1431927619000242 ◽

2019 ◽

Vol 25 (3) ◽

pp. 786-797

Author(s):

Longhai Li ◽

Ce Guo ◽

Shun Xu ◽

Yaopeng Ma ◽

Zhiwei Yu

Keyword(s):

Mechanical Properties ◽

Finite Element Analysis ◽

Finite Element ◽

Structural Information ◽

Three Dimensional ◽

Micro Computed Tomography ◽

Three Dimensional Model ◽

Element Analysis ◽

Hybrid Transmission ◽

Cyrtotrachelus Buqueti

AbstractThis work focuses on the application of nanoindentation measurements and the finite element method for analyzing the mechanical properties of the rostrum of the outstanding driller Cyrtotrachelus buqueti Guer. Nanoindentation tests were carried out to measure the Young's modulus and hardness of the rostrum, with the results for the “dry” samples being 13.886 ± 0.75 and 0.368 ± 0.0445 GPa, respectively. The values for the “fresh” samples showed no clear difference from those of the “dry” ones. Moreover, field observation was conducted to determine the motion behaviors of the rostrum on the weevil. Micro-computed tomography technology was employed to obtain structural information about the rostrum, using 9 µm slices. A real three-dimensional model of the rostrum was created using the MIMICS application. Finally, the mechanical properties of the rostrum were determined by finite element analysis. It was concluded that the rostrum provides an ideal biological template for the design of biocomposite materials and lightweight tube-shaped structures. The properties determined in this study can potentially be applied in different fields, such as in the design of automotive hybrid transmission shafts, helicopter tail drive shafts, robotic arms, and other sandwich structures in aerospace engineering.

Download Full-text

Torque Comparison Between Two Passive Self-Ligating Brackets with Respect to Interbracket Wire Dimensions and Types: A Finite Element Analysis

The Journal of Indian Orthodontic Society ◽

10.1177/03015742211029610 ◽

2021 ◽

pp. 030157422110296

Author(s):

Balan K Thushar ◽

Anirudh K Mathur ◽

Rajasri Diddige ◽

Shubhnita Verma ◽

Prasad Chitra

Keyword(s):

Computed Tomography ◽

Finite Element Analysis ◽

Finite Element ◽

Stainless Steel ◽

Wire Length ◽

Micro Computed Tomography ◽

Element Analysis ◽

Torque Values

Objective: This study aimed to analyze the expression of torque between 2 passive self-ligating brackets by simulating different clinical situations using finite element analysis. Material and Methods: Two passive self-ligating brackets, that is, Damon Q (Ormco, Glendora, California) and Smart Clip (3M Unitek, Monrovia, California), were 3D modeled using micro-computed tomography. ANSYS V14.5 software was used for analysis. Archwire and bracket interactions were simulated to measure torque expression by changing wire alloys (stainless steel [SS] and titanium molybdenum [TMA]) and interbracket dimensions. Results: Damon Q brackets generated higher torque values compared to Smart Clip brackets with both SS and TMA wires. Damon Q brackets generated the highest torquing moment of 25.72 Nmm and 7.45 Nmm, while Smart Clip brackets generated 22.25 Nmm and 7.31 Nmm with 0.019 × 0.025″ SS and TMA wires, respectively, at an interbracket distance of 12 mm. Torquing moments decreased for Damon Q and Smart Clip brackets when wire length increased from 12 mm to 16 mm. Conclusion: Damon Q with 0.019 × 0.025″wires exhibited superior torquing characteristics as compared to Smart Clip brackets with similar archwires.

Download Full-text