Selection of Build Orientation in FDM with Allowed Maximum Tensile Strain

2010 ◽  
Author(s):  
Yizhong Wang ◽  
Yonghua Chen
Keyword(s):  
Tensile Strain ◽  
Build Orientation ◽  
Maximum Tensile Strain ◽  
Selection Of

scholarly journals Enhanced Stretchable and Sensitive Strain Sensor via Controlled Strain Distribution

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 218 ◽  
Author(s):  
Huamin Chen ◽  
Longfeng Lv ◽  
Jiushuang Zhang ◽  
Shaochun Zhang ◽  
Pengjun Xu ◽  
...  
Keyword(s):  
Strain Distribution ◽  
Tensile Strain ◽  
Strain Sensor ◽  
Gauge Factor ◽  
Simple Method ◽  
Practical Applications ◽  
Simple Strategy ◽  
Highly Sensitive ◽  
Highly Stretchable ◽  
Maximum Tensile Strain

Stretchable and wearable opto-electronics have attracted worldwide attention due to their broad prospects in health monitoring and epidermal applications. Resistive strain sensors, as one of the most typical and important device, have been the subject of great improvements in sensitivity and stretchability. Nevertheless, it is hard to take both sensitivity and stretchability into consideration for practical applications. Herein, we demonstrated a simple strategy to construct a highly sensitive and stretchable graphene-based strain sensor. According to the strain distribution in the simulation result, highly sensitive planar graphene and highly stretchable crumpled graphene (CG) were rationally connected to effectively modulate the sensitivity and stretchability of the device. For the stretching mode, the device showed a gauge factor (GF) of 20.1 with 105% tensile strain. The sensitivity of the device was relatively high in this large working range, and the device could endure a maximum tensile strain of 135% with a GF of 337.8. In addition, in the bending mode, the device could work in outward and inward modes. This work introduced a novel and simple method with which to effectively monitor sensitivity and stretchability at the same time. More importantly, the method could be applied to other material categories to further improve the performance.

Correlation of Blooming and Tensile Properties in Surfactant-Loaded Natural Rubber Vulcanizates

2016 ◽  
Vol 705 ◽  
pp. 35-39 ◽  
Author(s):  
Bryan B. Pajarito ◽  
Jimyl Arabit
Keyword(s):  
Tensile Strength ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Tensile Strain ◽  
Tensile Modulus ◽  
Adhesive Tape ◽  
Taguchi Design Of Experiment ◽  
Convection Oven ◽  
Maximum Tensile Strain ◽  
Natural Rubber Vulcanizates

Tensile properties of surfactant-loaded natural rubber (NR) vulcanizates are investigated in correlation with blooming. Rubber sheets are compounded using an L12 orthogonal array of Taguchi design of experiment, where ingredients are treated as factors varied at low and high loadings. Blooming experiments are carried out by placing NR sheets in a natural convection oven set at 50 °C for 20 days. The amount of bloom on the surface is removed using adhesive tape and is monitored with time. Tensile properties of rubber dogbone samples are also measured with time. Results show that 5 out of 12 formulations show blooming to be significantly related to tensile modulus (0.005 < p < 0.039). It is observed that the tensile modulus increases with blooming (0.898 < r < 0.973). Three formulations indicate significant correlation of blooming with tensile strength (0.022 < p < 0.047). As observed, tensile strength decreases with blooming (-0.884 < r < -0.930). Five formulations signify blooming to have significant correlation with maximum tensile strain (0.000 < p < 0.011), which decreases with blooming (-0.957 < r < -0.995). Two formulations imply significant negative (-0.960 < r < -0.963) correlation between blooming and tensile set (p= 0.009).

Molecular dynamics simulation of carbon nanotubes and silicon nanowire composites

2020 ◽  
Vol 34 (31) ◽  
pp. 2050355
Author(s):  
Min Li ◽  
Quan Xie ◽  
Xiangyan Luo ◽  
Zean Tian
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Tensile Strength ◽  
Deformation Behavior ◽  
Tensile Strain ◽  
Silicon Nanowire ◽  
Dynamics Simulation ◽  
Nanocomposite Structure ◽  
Maximum Tensile Strain ◽  
Simulation Results

The deformation behavior of the nanocomposite structure under tension was studied by molecular dynamics (MDs) simulation. This nanocomposite structure is called as SiNW@CNT, which is a silicon nanowire (SiNW) embedded in carbon nanotube (CNT). The simulation results show that the insertion of the SiNW into CNT increases the tensile strength of zigzag CNT and the maximum tensile strain of the armchair CNT. However, it can greatly reduce the maximum tensile strain of the zigzag CNT and the maximum tensile strength of the armchair CNT. In addition, the maximum tensile strain of the SiNW@CNT has little to do with the diameter of the CNT, but is mainly related to the chirality of the CNT. For both hollow CNT and SiNW@CNT, the tensile strength is related to the diameter and chirality, and smaller diameter but greater tensile strength. This findings suggest that the physical properties of the SiNW@CNT can be tailored to specific applications by controlling the CNT diameter and chirality.

Aluminum-thin-film packaged fiber Bragg grating probes for monitoring the maximum tensile strain of composite materials

2014 ◽  
Vol 53 (17) ◽  
pp. 3615 ◽  
Author(s):  
Jooeun Im ◽  
Mihyun Kim ◽  
Ki-Sun Choi ◽  
Tae-Kyung Hwang ◽  
Il-Bum Kwon
Keyword(s):  
Thin Film ◽  
Composite Materials ◽  
Fiber Bragg Grating ◽  
Tensile Strain ◽  
Bragg Grating ◽  
Aluminum Thin Film ◽  
Maximum Tensile Strain

The Strain Change Rules of Full-Scale High Strength Concrete Frame Columns with High Axial Compression Rations

2014 ◽  
Vol 919-921 ◽  
pp. 288-291
Author(s):  
Guo Jun Zhang ◽  
Yong Bin Jia ◽  
Xi Lin Lu
Keyword(s):  
Axial Compression ◽  
High Strength Concrete ◽  
Tensile Strain ◽  
High Strength ◽  
Full Scale ◽  
Longitudinal Reinforcement ◽  
Strength Concrete ◽  
Concrete Frame ◽  
Strain Change ◽  
Maximum Tensile Strain

Based on experimental study of 9 full-scale high-strength concrete(HSC) rectangular frame columns with high axial compression ratios, high-strength longitudinal reinforcements and transverse reinforcements and rectangular interlocking ties, their strain change rules of longitudinal reinforcement, stirrups and concrete were discussed and analyzed. The main results indicate as follows. The maximum tensile strain of longitudinal reinforcement decrease and the tensile strain of concrete increase quickly as the axial compression ratios and the strength grades of concrete are higher; the strains of outer stirrups are all the time greater than those of inner stirrups; the single brace stirrups have the same action with the closed stirrups.

Experimental Determination of the Isostatic Lines

1942 ◽  
Vol 9 (4) ◽  
pp. A155-A160 ◽  
Author(s):  
Augusto J. Durelli
Keyword(s):  
Experimental Determination ◽  
Tensile Strain ◽  
Direct Method ◽  
The Body ◽  
Principal Stresses ◽  
Maximum Tensile Strain ◽  
Geometrical Form ◽  
Yield Values ◽  
A Direct Method

Abstract In this paper a direct method for obtaining the isostatics or stress trajectories is described. These lines indicate the directions of the principal stresses. The procedure used by the author can be applied almost without regard to the geometrical form of the object under stress. It also possesses the advantage in that the test is nondestructive and that in most cases it will yield values of the stress magnitudes within 10 or 15 per cent of the correct values. The technique consists in covering the surface of the body with a thin coat of lacquer which becomes brittle upon hardening. If the object being tested is painted under zero load and then stressed after the coating has hardened, the layer of lacquer will crack along lines perpendicular to the maximum tensile strain. The companion set of trajectories at right angles can usually be formed through relaxation. As an aid in photoelasticity this procedure has great possibilities as it eliminates the necessity for determining the isoclinic lines which are difficult to obtain.

scholarly journals Формирование и исследование локально-растянутых Ge-микроструктур для кремниевой фотоники

2018 ◽  
Vol 52 (11) ◽  
pp. 1331
Author(s):  
А.В. Новиков ◽  
Д.В. Юрасов ◽  
Е.Е. Морозова ◽  
Е.В. Скороходов ◽  
В.А. Вербус ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Luminescence Intensity ◽  
Strain Distribution ◽  
Elastic Strain ◽  
Tensile Strain ◽  
Considerable Increase ◽  
Local Strain ◽  
Silicon Substrates ◽  
Significant Modification ◽  
Maximum Tensile Strain

AbstractThe formation and properties of locally tensile strained Ge microstructures (“microbridges”) based on Ge layers grown on silicon substrates are investigated. The elastic-strain distribution in suspended Ge microbridges is analyzed theoretically. This analysis indicates that, in order to attain the maximum tensile strain within a microbridge, the accumulation of strain in all corners of the fabricated microstructure has to be minimized. Measurements of the local strain using Raman scattering show significant enhancement of the tensile strain from 0.2–0.25% in the initial Ge film to ~2.4% in the Ge microbridges. A considerable increase in the luminescence intensity and significant modification of its spectrum in the regions of maximum tensile strain in Ge microbridges and in their vicinity as compared to weakly strained regions of the initial Ge film is demonstrated by microphotoluminescence spectroscopy.

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