scholarly journals Evaluation of Materials in a Biomechanical System for Uses in Industrial Lifting Activities

2017 ◽  
Vol 2017 ◽  
pp. 1-9
Author(s):  
Roberto L. Avitia ◽  
Gustavo L. Badilla ◽  
Rubén C. Martínez ◽  
Jose A. Cárdenas-Haro ◽  
Marco A. Reyna ◽  
...  
Keyword(s):  
Manufacturing Process ◽  
Human Exposure ◽  
Economic Losses ◽  
Simulation Tool ◽  
Programming Environment ◽  
Human Arm

A biomechanical system is proposed for the emulation of the movement of human arm, leg, and spine movements, as an industry alternative to manage heavy operations in a manufacturing process. The Matlab® programming environment is used as a simulation tool for the analysis and validation of this proposed biomechanism. This machine would reduce the accidents due to human exposure to risky industry environments like the particular one at the host company that we are using as a model for our research. They claim that the accidents in this area alone arise to around thirty percent of the total, causing a decrease in the productivity of the company and other economic losses derived from the worker injuries and insurances.

Reference on Mycotoxins Occurrence, Prevalence, and Risk Assessment in Food Systems

2019 ◽  
pp. 294-343
Author(s):  
Griffiths Atungulu ◽  
Zeinab Mohammadi-Shad
Keyword(s):  
Risk Assessment ◽  
Filamentous Fungi ◽  
Human Exposure ◽  
Food Systems ◽  
Economic Losses ◽  
Animal Products ◽  
Food And Feed ◽  
Feed Safety ◽  
And Storage ◽  
Food And Feed Safety

Mycotoxins are a group of naturally occurring toxins that are produced by different filamentous fungi genera such as Aspergillus, Penicillium, Fusarium, etc. The word mycotoxin literally is derived from Greek word “myke” meaning fungus and “toxicum” meaning toxin. These contaminants can develop on different food and feed commodities during different stages including pre-harvest, harvest, and storage. Mycotoxins are of concern because their outbreak result in animal and human diseases and economic losses. It has been estimated that global post-harvest losses are approximately at 50%. Human exposure to mycotoxins is typically through consumption of contaminated agricultural products or indirectly by consumption of animal products containing mycotoxins or their metabolites. The chapter provides the latest information on mycotoxin issues and challenges related to food and feed safety.

Design and Implementation of Diamond Press'S Pressure Hammer Protection Based on Voiceprint Recognition

2014 ◽  
Vol 539 ◽  
pp. 156-160
Author(s):  
Lin Jing Wang ◽  
Ying Ying Zhao
Keyword(s):  
Manufacturing Process ◽  
Sound Pressure ◽  
Economic Losses ◽  
Protection Device ◽  
Characteristic Parameters ◽  
Design And Implementation ◽  
Template Library ◽  
Artificial Diamond ◽  
Field Sound ◽  
Tungsten Steel

In the manufacturing process of artificial diamond micro powder, if tungsten steel pressure hammer of diamond press makes a tungsten steel hammer pressure crack due to fatigue of workpiece, it is always leading to significant economic losses. The pressure hammer detection and protection device of the diamond press introduced in this paper takes advantage of the voiceprint recognition technology. Firstly, it extracts the characteristic parameters of pressure hammer breaking voice and establishes a sound pressure hammer breaking template library. And then, the paper compares the work field sound characteristic parameters of diamond press and pressure hammer breaking template library. If they are consistent with each other, the work power of diamond press will be cut down. Thus, it implements protection for the rest good pressure hammers.

scholarly journals A Contribution on Manufacturing Process Development for Composite Material Forming

2015 ◽  
Vol 651-653 ◽  
pp. 433-438
Author(s):  
Philippe Mayer ◽  
Henri Perrin ◽  
Eric Becker ◽  
Laurent Langlois ◽  
Régis Bigot
Keyword(s):  
Composite Material ◽  
Experimental Analysis ◽  
Manufacturing Process ◽  
Process Development ◽  
Simulation Tool ◽  
Forming Process ◽  
Fem Simulations ◽  
Material Forming

The author presents an approach to study an innovative manufacturing process developed to produce composite parts with new geometrical possibilities. The aim of this first study is to understand the motions of fibers during the forming of this kind of composite parts and to explore the feasibility of this forming process by an experimental analysis and FEM simulations with Forge3©. The reliability of the simulation tool and its potential, never exploited in this area, will be evaluated.

A Software Tool for Analyzing Motions and Loading in Spatial Tensegrity Structures

2015 ◽  
Author(s):  
Carl A. Nelson
Keyword(s):  
Software Tool ◽  
Analysis Tool ◽  
Simulation Tool ◽  
Programming Environment ◽  
Tensegrity Structures ◽  
Solution Approach ◽  
Spatial Mechanisms ◽  
Load Distributions ◽  
Matlab Programming

Tensegrity structures are a unique class of mechanisms since they are overconstrained but possess mobility due to member compliance. Visualization of these systems is an important step in their design. This paper presents a simulation tool developed in the MATLAB programming environment for simulation of spatial tensegrity structures. Particularly, it allows visualization of motion (animation) of tensegrity mechanisms, as well as determination of load distributions. A compatibility-based solution approach is used to handle the constraints of loading cables in tension only. The result is a design/analysis tool useful not only for tensegrity mechanisms, but general planar and spatial mechanisms as well. This is illustrated by examples.

Application of a Discrete Mesoscopic Finite Element Approach to Investigate the Bending and Folding of Fiber-Reinforced Composite Materials during the Manufacturing Process

2014 ◽  
Vol 611-612 ◽  
pp. 324-331
Author(s):  
Lisa M. Dangora ◽  
James Sherwood ◽  
Cynthia Mitchell
Keyword(s):  
Finite Element ◽  
Manufacturing Process ◽  
Structural Integrity ◽  
Plane Waves ◽  
Element Model ◽  
Simulation Tool ◽  
Fiber Reinforced ◽  
Molding Process ◽  
Reinforced Composite ◽  
Out Of Plane

During the manufacturing of fabric-reinforced composite parts using a matched-die compression molding process or liquid composite molding, the fabric may experience local in-plane compressive loads that cause out-of-plane deformations. The waves that result from this outofplane motion can lead to the formation of resin rich pockets (during the infusion stage of a dry fabric) or they may be forced down into a fold by the tooling. Defects such as resin-rich pockets and folds compromise the structural integrity of the formed composite part. Therefore, it is valuable to have a simulation tool that can accurately capture the fabric bending properties and predict the locations where waves or folds are likely to occur as a result of the manufacturing process. The tool can then be used to investigate changes in the forming parameters such that the development of such defects can be mitigated. A hybrid finite element model used with a discrete mesoscopic approach captures the behavior of continuous fiber-reinforced fabrics where the fabric yarn is represented by beam elements and the shear behavior is implemented in shell elements. User-defined material subroutines describe the mechanical behavior of the beams and shells for their respective contributions to the overall fabric behavior. Simulations are used to demonstrate the ability of the modeling approach to predict the amplitude and curvature of out-of-plane waves. The simulation results are compared with experimental data to show the accuracy of the modeling. Additional models are presented to demonstrate the capability of the simulation tool to capture fabric folding.

The Microscopy of Compatibility and Incompatibility in Ulmus

1985 ◽  
Vol 43 ◽  
pp. 504-505
Author(s):  
B. L. Redmond ◽  
Christopher F. Bob
Keyword(s):  
Dutch Elm Disease ◽  
Economic Losses ◽  
Hybrid Progeny ◽  
Ulmus Pumila ◽  
Ulmus Americana ◽  
American Elm ◽  
Asian Species ◽  
Ulmus Parvifolia ◽  
Initial Appearance ◽  
Chinese Elm

The American Elm (Ulmus americana L.) has been plagued by Dutch Elm Disease (DED), a lethal disease caused by the fungus Ceratocystis ulmi (Buisman) c. Moreau. Since its initial appearance in North America around 1930, DED has wrought inexorable devastation on the American elm population, triggering both environmental and economic losses. In response to the havoc caused by the disease, many attempts have been made to hybridize U. americana with a few ornamentally less desirable, though highly DED resistant, Asian species (mainly the Siberian elm, Ulmus pumila L., and the Chinese elm Ulmus parvifolia Jacq.). The goal is to develop, through breeding efforts, hybrid progeny that display the ornamentally desirable characteristics of U. americana with the disease resistance of the Asian species. Unfortunately, however, all attempts to hybridize U. americana have been prevented by incompatibility. Only through a firm understanding of both compatibility and incompatibility will it be possible to circumvent the incompatibility and hence achieve hybridization.

Identifying groups of airborne particles by ordination

1994 ◽  
Vol 52 ◽  
pp. 856-857
Author(s):  
M. Shlepr ◽  
C. M. Vicroy
Keyword(s):  
Elemental Analysis ◽  
Energy Dispersive Spectroscopy ◽  
Manufacturing Process ◽  
Spatial Representation ◽  
Airborne Particles ◽  
Common Source ◽  
Data Set ◽  
Microelectronics Industry ◽  
Induced Changes ◽  
Source Materials

The microelectronics industry is heavily tasked with minimizing contaminates at all steps of the manufacturing process. Particles are generated by physical and/or chemical fragmentation from a mothersource. The tools and macrovolumes of chemicals used for processing, the environment surrounding the process, and the circuits themselves are all potential particle sources. A first step in eliminating these contaminants is to identify their source. Elemental analysis of the particles often proves useful toward this goal, and energy dispersive spectroscopy (EDS) is a commonly used technique. However, the large variety of source materials and process induced changes in the particles often make it difficult to discern if the particles are from a common source.Ordination is commonly used in ecology to understand community relationships. This technique usespair-wise measures of similarity. Separation of the data set is based on discrimination functions. Theend product is a spatial representation of the data with the distance between points equaling the degree of dissimilarity.

Water in the Vinegar Manufacturing Process

1952 ◽  
Vol 44 (3) ◽  
pp. 449-449
Author(s):  
Rudolph Allgeier ◽  
Reuben Wisthoff ◽  
Frank Hildebrandt
Keyword(s):  
Manufacturing Process

A Perspective on Low Molecular Weight Heparins in the Management of Thrombosis

1993 ◽  
Vol 13 (S 01) ◽  
pp. S5-S11 ◽  
Author(s):  
Debra Hoppensteadt ◽  
Jeanine Walenga ◽  
A Ahsan ◽  
O Iqbal ◽  
W Jeske ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Mechanism Of Action ◽  
Manufacturing Process ◽  
Laboratory Tests ◽  
Low Molecular Weight ◽  
Low Molecular Weight Heparins ◽  
Pharmacological Management

SummaryThe introduction of low molecular weight heparins has added a new dimension to the pharmacological management of thrombotic disorders. Because of different chemical and pharmacological characteristics, due to the manufacturing process, each LMWH should be considered as a distinct entitity and only be used for its given indication. A list of commercially available LMWHs is included. The mechanism of action of the LMWHs and their use in various disorders are discussed. Available laboratory tests for monitoring LMWHs are presented and their limitations pointed out.

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