Suitable Material Selection for Large Size Cylindrical Gears*

2021 ◽  
Vol 76 (1) ◽  
pp. 19-35
Author(s):  
D. Fuchs ◽  
C. Güntner ◽  
T. Tobie ◽  
K. Stahl
Keyword(s):  
Material Selection ◽  
Focus Of Attention ◽  
Direct Impact ◽  
Load Bearing Capacity ◽  
Suitable Material ◽  
Cylindrical Gears ◽  
Large Size ◽  
Large Gear ◽  
Selection For ◽  
Material Price

Abstract Globalization and international supply chains constantly challenge gear- and steel manufacturers. In the case of large gear units in particular, expensive alloy contents have a direct impact on the material price. Steels with lower alloy contents and therefore cheaper steels are therefore becoming the focus of attention in order to further improve competitiveness. This article therefore compares two materials with different alloying elements and contents and thus different hardenability behaviour. For this purpose, extensive material characterizations as well as pulsator tests were carried out on case-hardened large gears. The aim of these tests was to determine the tooth root load-bearing capacity of the two material variants. Finally, the results are compared, discussed and recommendations for industrial application are derived, taking into account the hardenability of large gears. ◼

scholarly journals Material selection for optimum design of MEMS pressure sensors

2019 ◽  
Vol 26 (9) ◽  
pp. 2751-2766
Author(s):  
Zahid Mehmood ◽  
Ibraheem Haneef ◽  
Florin Udrea
Keyword(s):  
Optimum Design ◽  
Pressure Sensor ◽  
Material Selection ◽  
Pressure Sensors ◽  
Optimum Performance ◽  
Suitable Material ◽  
Micro Scale ◽  
Selection For ◽  
Scale Properties ◽  
Mems Pressure Sensors

Abstract Choice of the most suitable material out of the universe of engineering materials available to the designers is a complex task. It often requires a compromise, involving conflicts between different design objectives. Materials selection for optimum design of a Micro-Electro-Mechanical-Systems (MEMS) pressure sensor is one such case. For optimum performance, simultaneous maximization of deflection of a MEMS pressure sensor diaphragm and maximization of its resonance frequency are two key but totally conflicting requirements. Another limitation in material selection of MEMS/Microsystems is the lack of availability of data containing accurate micro-scale properties of MEMS materials. This paper therefore, presents a material selection case study addressing these two challenges in optimum design of MEMS pressure sensors, individually as well as simultaneously, using Ashby’s method. First, data pertaining to micro-scale properties of MEMS materials has been consolidated and then the Performance and Material Indices that address the MEMS pressure sensor’s conflicting design requirements are formulated. Subsequently, by using the micro-scale materials properties data, candidate materials for optimum performance of MEMS pressure sensors have been determined. Manufacturability of pressure sensor diaphragm using the candidate materials, pointed out by this study, has been discussed with reference to the reported devices. Supported by the previous literature, our analysis re-emphasizes that silicon with 110 crystal orientation [Si (110)], which has been extensively used in a number of micro-scale devices and applications, is also a promising material for MEMS pressure sensor diaphragm. This paper hence identifies an unexplored opportunity to use Si (110) diaphragm to improve the performance of diaphragm based MEMS pressure sensors.

scholarly journals Multi Criteria Material Selection for Eco-design

2015 ◽  
Vol 12 (5) ◽  
pp. 526-536 ◽  
Author(s):  
Marco Serafini ◽  
Davide Russo ◽  
Caterina Rizzi
Keyword(s):  
Material Selection ◽  
Selection For

Knowledge-Based System for Supporting the Design of a Plate-Press

2012 ◽  
Vol 12 (2) ◽  
Author(s):  
David Potočnik ◽  
Miran Ulbin ◽  
Bojan Dolšak
Keyword(s):  
Material Selection ◽  
Compressive Load ◽  
The Finite Element Method ◽  
Design Quality ◽  
Suitable Material ◽  
Improve Design ◽  
Knowledge Based System ◽  
Cad System ◽  
Design Time ◽  
Knowledge Based

This paper presents a knowledge-based system capable of giving the designer quality support when making decisions from the aspect of modeling the reinforcement of a plate-press within a position of maximum compressive load, and by choosing suitable material for the plate. Based on the selected combination of reinforcement and material, this system acquaints the user with the size and position of the largest comparative stress, and the greatest nodal displacement in the load-direction. This system operates based on the implemented knowledge of experts in the execution of design, material selection, and numerical analysis based on the finite-element method (FEM), which was written with the help of parameters within the knowledge-base of the CATIA V5 CAD-system. Using this system gives the user an opportunity to reach conclusions that are crucial for designing a plate-press or pressure-loaded die-elements, in general. The results reveal that the system can dramatically shorten design time and improve design quality in comparison to manual design process.

Compatibility Analysis of Product Design for Recyclability and Reuse

1994 ◽  
Author(s):  
Patrick Di Marco ◽  
Charles F. Eubanks ◽  
Kos Ishii
Keyword(s):  
Life Cycle ◽  
Cost Function ◽  
Product Design ◽  
Material Selection ◽  
Computer Tool ◽  
Compatibility Analysis ◽  
Life Cycle Design ◽  
Environmentally Responsible ◽  
Qualitative Knowledge ◽  
Selection For

Abstract This paper describes a method for evaluating the compatibility of a product design with respect to end-of-life product retirement issues, particularly recyclability. Designers can affect the ease of recycling in two major areas: 1) ease of disassembly, and 2) material selection for compatibility with recycling methods. The proposed method, called “clumping,” involves specification of the level of disassembly and the compatibility analysis of each remaining clump with the design’s post-life intent; i.e., reuse, remanufacturing, recycling, or disposal. The method uses qualitative knowledge to assign a normalized measure of compatibility to each clump. An empirical cost function maps the measure to an estimated cost to reprocess the product. The method is an integral part of our life-cycle design computer tool that effectively guides engineers to an environmentally responsible product design. A refrigerator in-door ice dispenser serves as an illustrative example.

Three-dimensional (3D) printed scaffold and material selection for bone repair

2019 ◽  
Vol 84 ◽  
pp. 16-33 ◽  
Author(s):  
Lei Zhang ◽  
Guojing Yang ◽  
Blake N. Johnson ◽  
Xiaofeng Jia
Keyword(s):  
Bone Repair ◽  
Material Selection ◽  
Three Dimensional ◽  
3D Printed ◽  
Selection For

Three Approaches for Managing Stiffness in Origami-Inspired Mechanisms

2018 ◽  
Author(s):  
Alden Yellowhorse ◽  
Larry L. Howell
Keyword(s):  
Experimental Data ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Engineering Applications ◽  
Element Analysis ◽  
Advantages And Disadvantages ◽  
Large Size ◽  
Selection For

Ensuring that deployable mechanisms are sufficiently rigid is a major challenge due to their large size relative to their mass. This paper examines three basic types of stiffener that can be applied to light, origami-inspired structures to manage their stiffness. These stiffeners are modeled analytically to enable prediction and optimization of their behavior. The results obtained from this analysis are compared to results from a finite-element analysis and experimental data. After verifying these models, the advantages and disadvantages of each stiffener type are considered. This comparison will facilitate stiffener selection for future engineering applications.

Sign in / Sign up

Export Citation Format

Share Document