Characterization of Composite Structure Surface Uniformity using Interval Based Gradient Field Histogram Analysis of Thermographic Images (IGF-HA)

2018 ◽  
Vol 14 (6) ◽  
pp. 819-828 ◽  
Author(s):  
Mahmoud Zaki Iskandarani
Keyword(s):  
Composite Structure ◽  
Histogram Analysis ◽  
Gradient Field ◽  
Structure Surface

Optimization and characterization of flavonoids extracted from Cannabis sativa fibers

2021 ◽  
pp. 004051752110277
Author(s):  
Qilu Cui ◽  
Jiawei Li ◽  
Chongwen Yu
Keyword(s):  
Chemical Structure ◽  
Cannabis Sativa ◽  
Ethanol Concentration ◽  
Extraction Process ◽  
Test Results ◽  
Hemp Fiber ◽  
Hemp Fibers ◽  
Structure Surface ◽  
Degumming Process

In this paper, the extraction process of flavonoids from hemp fibers was studied. Response surface methodology (RSM) analysis of the extraction parameters indicated that optimized results would be ethanol concentration 76 vol.%, bath ratio 1:50, and reaction time 139 min; therefore, an optimal extraction rate of flavonoids of 0.2275% can be obtained. The chemical structure, surface morphology and element composition of flavonoid extracts were analyzed. The test results indicated that hemp extract contains flavonoids, which can be used to extract flavonoids from hemp fiber, so as to comprehensively develop hemp fiber and reduce the discharge of waste liquid in the traditional degumming process.

Design and characterization of a hybrid soft gripper with active palm pose control

2020 ◽  
Vol 39 (14) ◽  
pp. 1668-1685 ◽  
Author(s):  
Vignesh Subramaniam ◽  
Snehal Jain ◽  
Jai Agarwal ◽  
Pablo Valdivia y Alvarado
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Composite Structure ◽  
Element Model ◽  
Open Loop ◽  
Aspect Ratios ◽  
Maximum Payload ◽  
Wide Range ◽  
Pose Control

The design and characterization of a soft gripper with an active palm to control grasp postures is presented herein. The gripper structure is a hybrid of soft and stiff components to facilitate integration with traditional arm manipulators. Three fingers and a palm constitute the gripper, all of which are vacuum actuated. Internal wedges are used to tailor the deformation of a soft outer reinforced skin as vacuum collapses the composite structure. A computational finite-element model is proposed to predict finger kinematics. Thanks to its active palm, the gripper is capable of grasping a wide range of part geometries and compliances while achieving a maximum payload of 30 N. The gripper natural softness enables robust open-loop grasping even when components are not properly aligned. Furthermore, the grasp pose of objects with various aspect ratios and compliances can be robustly maintained during manipulation at linear accelerations of up to 15 m/s2 and angular accelerations of up to 5.23 rad/s2.

scholarly journals MP19-04 CT-BASED VOLUMETRIC CHARACTERIZATION OF RENAL CLEAR CELL CARCINOMA IN VON HIPPEL-LINDAU (VHL) USING NOVEL HISTOGRAM ANALYSIS.

2016 ◽  
Vol 195 (4S) ◽  
Author(s):  
Ashkan Malayeri ◽  
Amir Pourmorteza ◽  
Nikeith Shah ◽  
Rabindra Gautam ◽  
Alireza Yazdi ◽  
...  
Keyword(s):  
Cell Carcinoma ◽  
Clear Cell ◽  
Clear Cell Carcinoma ◽  
Renal Clear Cell Carcinoma ◽  
Histogram Analysis ◽  
Von Hippel Lindau

Preparation and Characterization of SiO2/VO2 Composite Particles

2010 ◽  
Vol 152-153 ◽  
pp. 797-800
Author(s):  
Ai Hong Bi ◽  
Jin Hua Zhu
Keyword(s):  
Sol Gel ◽  
Silica Film ◽  
Composite Particles ◽  
Basic Study ◽  
Coating Agent ◽  
Visible Transmittance ◽  
Smart Coatings ◽  
Structure Surface ◽  
Composition Structure

In order to enhance the visible transmittance, a compact silica film was successfully coated on the surface of VO2 particles by the sol-gel method, using sodium silicate as the coating agent and hydrochloric acid as the neutralization agent. The composition, structure, surface bonding mode and the visible transmittance of the products were characterized by means of XRD, SEM, FTIR and UV-Vis. The results showed that SiO2/VO2 composite particles can produced by this method, and the visible transmittance was higher than the pure VO2. It was a basic study in the applications of the smart coatings based on VO2 powders.

8-2: Sparkle Characterization of Anti-glare Layers on Displays with a Grey Value Histogram Analysis

2018 ◽  
Vol 49 (1) ◽  
pp. 76-79 ◽  
Author(s):  
Valeriano Ferreras Paz ◽  
Stephan Kohlenbecker ◽  
Efstathios Persidis
Keyword(s):  
Histogram Analysis

scholarly journals Morphing of soft tubes by anisotropic growth

2021 ◽  
Author(s):  
Paola Nardinocchi ◽  
Luciano Teresi
Keyword(s):  
Energy Storage ◽  
Small Perturbation ◽  
Elastic Energy ◽  
Composite Structure ◽  
Smart Growth ◽  
Anisotropic Growth ◽  
Cylindrical Structures

AbstractWe present a study of smart growth in layered cylindrical structures. We start from the characterization of a compatible growth field in an anisotropic growing tube with the aim to show a small perturbation in the compatible growth field that may produce a controlled deprivation of compatibility and localization of elastic energy storage in a composite structure made up of anisotropic growing tubes.

scholarly journals The Analysis of Resistance to Brittle Cracking of Tungsten Doped TiB2 Coatings Obtained by Magnetron Sputtering

Coatings ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 807
Author(s):  
Jerzy Smolik ◽  
Joanna Kacprzyńska-Gołacka ◽  
Sylwia Sowa ◽  
Artur Piasek
Keyword(s):  
Fracture Toughness ◽  
Magnetron Sputtering ◽  
Composite Structure ◽  
Columnar Structure ◽  
Mode I ◽  
Nano Composite ◽  
Tungsten Concentration ◽  
Tib2 Coating ◽  
Crack Length Measurement

In this work, the authors present the possibility of characterization of the fracture toughness in mode I (KIC) for TiB2 and TiB2 coatings doped with different concentration of W (3%, 6% and 10%). The Young’s modulus, hardness and fracture toughness of this coatings are extracted from nanoindentation experiments. The fracture toughness was evaluated using calculation of crack length measurement. An important observation is that increasing tungsten concentration in the range 0–10% changes the microstructure of the investigated coatings: from columnar structure for TiB2 coating to nano-composite structure for Ti-B-W (10%) coating. It can be concluded that doping with concentration 10 at.% W causes an increase of the fracture toughness for the tested coatings.

Structural and Optical Characterization of ZnO and Glucose Capped ZnO Nanoparticles

2018 ◽  
Vol 21 (1) ◽  
pp. 001-005 ◽  
Author(s):  
A. Dhanalakshmi ◽  
S. Thanikaikarasan ◽  
B. Natarajan ◽  
V. Ramadas ◽  
T. Mahalingam ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Spectroscopic Analysis ◽  
Optical Characterization ◽  
Hexagonal Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Infrared Spectroscopic Analysis ◽  
Structure Surface ◽  
Chemical Reaction Method

Zinc Oxide and Glucose capped Zinc Oxide nanoparticles have been prepared using modified chemical reaction method. X-ray diffraction analysis showed that the prepared samples possess polycrystalline nature with hexagonal structure. Surface morphology has been analyzed using scanning electron microscopy. The estimated value of band gap was found to be 3.41 and 3.87 eV for Zinc Oxide and Glucose capped ZnO respectively. Fourier Transform Infrared spectroscopic analysis has been carried out to find the chemical bond and elemental composition present in Zinc Oxide and Glucose capped Zinc Oxide.

Magnetoresistive characterization of thin‐film structures by a gradient‐field method (abstract)

1994 ◽  
Vol 75 (10) ◽  
pp. 5923-5923
Author(s):  
P. L. Trouilloud ◽  
F. Suits ◽  
C. V. Jahnes ◽  
M. A. Russak ◽  
E. J. Spada ◽  
...  
Keyword(s):  
Thin Film ◽  
Field Method ◽  
Gradient Field
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