Extrusion Die and Tooling

2000 ◽  
pp. 87-118
Keyword(s):  
Aluminum Alloys ◽  
Friction And Wear ◽  
Thermal Shrinkage ◽  
Basic Design ◽  
Design Considerations ◽  
Extrusion Die ◽  
Die Materials ◽  
And Function

Abstract This chapter familiarizes readers with the design, configuration, and function of tooling and dies used to extrude aluminum alloys. It discuses basic design considerations, including the geometry, location, and orientation of die openings; allowances for thermal shrinkage, stretching, and deflection; and the length and profile of bearing surfaces. It outlines the steps and processes involved in die making, describes the selection and treatment of die materials, and examines the factors that influence friction and wear. It also discusses the general procedures for on-site die correction.

ECAT III -- Basic Design Considerations

1983 ◽  
Vol 30 (1) ◽  
pp. 729-733 ◽  
Author(s):  
E. J. Hoffman ◽  
A. R. Ricci ◽  
L. M. A. M. van der Stee ◽  
M. E. Phelps
Keyword(s):  
Basic Design ◽  
Design Considerations

Basic Design Considerations

2017 ◽  
pp. 7-27
Author(s):  
Syed R. Qasim
Keyword(s):  
Basic Design ◽  
Design Considerations

scholarly journals Design principles of hair-like structures as biological machines

2018 ◽  
Vol 15 (142) ◽  
pp. 20180206 ◽  
Author(s):  
Madeleine Seale ◽  
Cathal Cummins ◽  
Ignazio Maria Viola ◽  
Enrico Mastropaolo ◽  
Naomi Nakayama
Keyword(s):  
Mechanical Properties ◽  
Surface Area ◽  
Large Surface Area ◽  
Structural Basis ◽  
Basic Design ◽  
Form And Function ◽  
Mechanical Unit ◽  
Wide Range ◽  
Range Of Functions ◽  
And Function

Hair-like structures are prevalent throughout biology and frequently act to sense or alter interactions with an organism's environment. The overall shape of a hair is simple: a long, filamentous object that protrudes from the surface of an organism. This basic design, however, can confer a wide range of functions, owing largely to the flexibility and large surface area that it usually possesses. From this simple structural basis, small changes in geometry, such as diameter, curvature and inter-hair spacing, can have considerable effects on mechanical properties, allowing functions such as mechanosensing, attachment, movement and protection. Here, we explore how passive features of hair-like structures, both individually and within arrays, enable diverse functions across biology. Understanding the relationships between form and function can provide biologists with an appreciation for the constraints and possibilities on hair-like structures. Additionally, such structures have already been used in biomimetic engineering with applications in sensing, water capture and adhesion. By examining hairs as a functional mechanical unit, geometry and arrangement can be rationally designed to generate new engineering devices and ideas.

Qualitative Diary Research Design

2018 ◽  
Author(s):  
Lauri L. Hyers
Keyword(s):  
Research Design ◽  
Past Research ◽  
Basic Design ◽  
Design Considerations ◽  
Diary Research ◽  
Participant Selection ◽  
Diary Studies ◽  
Research Studies

This chapter discusses basic design considerations for qualitative diary studies that involve either archival or solicited diaries. After a brief overview of the unique types of data diaries can provide, a separate discussion is provided for archival and solicited diary studies. Archival diary researchers will need to locate diaries that have already been written for personal reasons or for past research studies. They will not have any say in the format of these pre-existing diaries. Solicited diary researchers, in contrast, must plan for participant selection and recruitment and the structure and timing of the diary entries. The chapter concludes with a discussion of potential supporting documents for both archival and solicited diary studies.

Study on the Testing Auxiliary System of a Large Scale Centrifugal Shaker

2011 ◽  
Vol 368-373 ◽  
pp. 959-962
Author(s):  
Yong Zhi Wang ◽  
Xiao Ming Yuan ◽  
Rui Sun
Keyword(s):  
Data Acquisition ◽  
Large Scale ◽  
Image Acquisition ◽  
Model Tests ◽  
Auxiliary System ◽  
Basic Design ◽  
Data Acquisition Systems ◽  
Design Requirements ◽  
Centrifugal Model ◽  
And Function

By special advantages and progress of dynamic centrifugal model tests, construction and development of large scale centrifugal shakers are driven. As one subsystem of a large scale centrifugal shaker, the testing auxiliary system is used to data acquisition, image acquisition and model making. The perfect design and construction of a testing auxiliary system must give a guarantee for dynamic centrifugal model tests. This paper outlines the components and function of the testing auxiliary system of a large scale centrifugal shaker. The basic design requirements and critical techniques relevant to data acquisition systems, image acquisition systems and containers are analyzed according to the characteristics of dynamic centrifugal model tests on a large scale centrifugal shaker, meanwhile, some specific conception and design suggestions are proposed. The results can offer some references for design of the testing auxiliary system of a large scale centrifugal shaker.

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