Adaptive Product, Process and Tooling Design Strategy for Optimal Dimensional Quality of Automotive Body Assemblies

2003 ◽  
Vol 125 (4) ◽  
pp. 835-843 ◽  
Author(s):  
Bai Zhang ◽  
Jun Ni
Keyword(s):  
Adaptive Strategy ◽  
Design Strategy ◽  
Automotive Body ◽  
Whole Process ◽  
Body Development ◽  
Dimensional Variation ◽  
Connection Type ◽  
Tooling Design ◽  
Key Dimensions

Research investigations have shown that the dimensional quality is deeply rooted in the whole process of the product development, from product, process and tooling design, the tooling manufacturing process, to the production. Unlike rigid body assembly, automotive body assembly has its unique characteristics. The final dimensions of automotive bodies depend not only on the variations/deviations and rigidity of components, tooling/process variation, but also on the product structure, connection type and assembly sequence. An adaptive strategy for automotive body development is here by presented to exploit these unique features. By the adaptive product, process and tooling design strategy, the dimensional variation/deviation for the key dimensions can be significantly reduced and the die tryout time be shorten with significant cost saving.

Development and Application of Quality Control System for Highway Subgrade Construction

2019 ◽  
Vol 2 (5) ◽  
Author(s):  
Tong Wang
Keyword(s):  
Quality Control ◽  
Real Time ◽  
Detection Method ◽  
System Development ◽  
Effective Control ◽  
Construction Process ◽  
Development Mode ◽  
The Road ◽  
Whole Process

The compaction quality of the subgrade is directly related to the service life of the road. Effective control of the subgrade construction process is the key to ensuring the compaction quality of the subgrade. Therefore, real-time, comprehensive, rapid and accurate prediction of construction compaction quality through informatization detection method is an important guarantee for speeding up construction progress and ensuring subgrade compaction quality. Based on the function of the system, this paper puts forward the principle of system development and the development mode used in system development, and displays the development system in real-time to achieve the whole process control of subgrade construction quality.

scholarly journals Using Regulatory Flexibility to Address Market Informality in Seed Systems: A Global Study

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 377
Author(s):  
Katrin Kuhlmann ◽  
Bhramar Dey
Keyword(s):  
Seed Quality ◽  
Regulatory Environment ◽  
Control Mechanisms ◽  
Seed Systems ◽  
High Quality ◽  
Design And Implementation ◽  
Key Dimensions ◽  
Regulatory Flexibility

Seed rules and regulations determine who can produce and sell seeds, which varieties will be available in the market, the quality of seed for sale, and where seed can be bought and sold. The legal and regulatory environment for seed impacts all stakeholders, including those in the informal sector, through shaping who can participate in the market and the quality and diversity of seed available. This paper addresses a gap in the current literature regarding the role of law and regulation in linking the informal and formal seed sectors and creating more inclusive and better governed seed systems. Drawing upon insights from the literature, global case studies, key expert consultations, and a methodology on the design and implementation of law and regulation, we present a framework that evaluates how regulatory flexibility can be built into seed systems to address farmers’ needs and engage stakeholders of all sizes. Our study focuses on two key dimensions: extending market frontiers and liberalizing seed quality control mechanisms. We find that flexible regulatory approaches and practices play a central role in building bridges between formal and informal seed systems, guaranteeing quality seed in the market, and encouraging market entry for high-quality traditional and farmer-preferred varieties.

scholarly journals Syngas Quality as a Key Factor in the Design of an Energy-Efficient Pyrolysis Plant for Scrap Tyres

Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1455 ◽  
Author(s):  
Dina Czajczyńska ◽  
Renata Krzyżyńska ◽  
Hussam Jouhara
Keyword(s):  
Energy Demand ◽  
Chemical Properties ◽  
Industrial Emissions ◽  
Whole Process ◽  
Start Up ◽  
Key Factor ◽  
Industrial Emissions Directive ◽  
Pyrolytic Oil ◽  
Quality Of Products

In 2016 4.94 million tonnes of tyres were produced. Each tyre eventually become waste and pyrolysis has been considered an effective way of utilizing scrap tyres for several decades. However, pyrolysis has failed many times because the process has a great energy demand and the quality of products is unstable or insufficient for commercial use. Usually plants are focused on the production of pyrolytic oil or char and the gaseous phase is only a by-product. In this paper the importance of composition and quality of pyrolytic gas is emphasized. The main chemical properties make this gas a valuable biofuel that may satisfy energy requirements of the whole process (except for the start-up phase). Available data from literature concerning composition and other features of the pyrolytic gas from scrap tyres obtained at temperatures up to 1000 °C are compared with experimental results. The quality of evolved gases is discussed in the context of the Industrial Emissions Directive (IED), too. Finally, an analysis of the mass balances obtained allows a decision about the business profile and profitability.

Boring-Rolling Process Research and Tooling Design of Hydraulic Cylinder

2013 ◽  
Vol 842 ◽  
pp. 634-638
Author(s):  
Yan Jing ◽  
Feng Zhao
Keyword(s):  
Process Parameters ◽  
High Efficiency ◽  
Hydraulic Cylinder ◽  
Rolling Process ◽  
Process Research ◽  
Cylinder Block ◽  
Process Route ◽  
Emerging Issues ◽  
Tooling Design

By comparison, this paper determines inner bore processing technic program of the engineering machinery hydraulic cylinder block and makes some analysis of the rolling processing technic and relevant emerging issues to propose reasonable and feasible process route and process parameters and ensure the quality of the cylinder processing. It also shows the design of boring-rolling compound tools with high efficiency and high precision for given cylinders.

Robust Trimming of Automotive Panels

2007 ◽  
Vol 539-543 ◽  
pp. 423-428 ◽  
Author(s):  
S.F. Golovashchenko
Keyword(s):  
Crack Propagation ◽  
Elastic Support ◽  
Small Radius ◽  
Automotive Body ◽  
Two Measures ◽  
Trimmed Surface ◽  
Automotive Panels ◽  
Exterior Panel

Small pieces of metal are generated during trimming of automotive body panels. Commonly referred to as slivers, these pieces can be imprinted into the surface of stamped panels. This may require metalfinish of every stamped exterior panel. The objective of the paper is to study the influence of trimming conditions on quality of trimmed surface and to modify the trimming process to eliminate slivers and burrs from the trimmed surface. Suggested solution includes two measures: 1) building an elastic support of the offal eliminating bending of the area of the blank being trimmed off; 2) creating the preference of crack propagation from the lower shearing edge by machining a small radius on the upper shearing edge.

Quality Monitoring System for Seismic While Drilling

2013 ◽  
Vol 318 ◽  
pp. 572-575
Author(s):  
Li Li Yu ◽  
Yu Hong Li ◽  
Ai Feng Wang
Keyword(s):  
Data Acquisition ◽  
Monitoring System ◽  
Signal Analysis ◽  
Quality Evaluation ◽  
Quality Monitoring ◽  
Quality Of Data ◽  
Whole Process ◽  
Engineering Parameters ◽  
Network Status

In this paper a quality monitoring system for seismic while drilling (SWD) that integrates the whole process of data acquisition was developed. The acquisition equipment, network status and signals of accelerometer and geophone were monitored real-time. With fast signal analysis and quality evaluation, the acquisition parameters and drilling engineering parameters can be adjusted timely. The application of the system can improve the quality of data acquisition and provide subsequent processing and interpretation with high qualified reliable data.

Product-Oriented Sensitivity Analysis for Multistation Compliant Assemblies

2006 ◽  
Vol 129 (8) ◽  
pp. 844-851 ◽  
Author(s):  
Jianpeng Yue ◽  
Jaime A. Camelio ◽  
Melida Chin ◽  
Wayne Cai
Keyword(s):  
Product Performance ◽  
Sensitivity Index ◽  
Final Assembly ◽  
Sensitivity Indices ◽  
Dimensional Variation ◽  
Product And Process ◽  
Pattern Sensitivity ◽  
Sheet Metal Assembly

Dimensional variation in assembled products directly affects product performance. To reduce dimensional variation, it is necessary that an assembly be robust. A robust assembly is less sensitive to input variation from the product and process components, such as incoming parts, subassemblies, fixtures, and welding guns. In order to effectively understand the sensitivity of an assembly to input variation, an appropriate set of metrics must be defined. In this paper, three product-oriented indices, including pattern sensitivity index, component sensitivity index, and station sensitivity index, are defined. These indices can be utilized to measure the variation influence of a pattern, an individual part, and/or component, and components at a particular station to the dimensional quality of a final assembly. Additionally, the relationships among these sensitivity indices are established. Based on these relationships, the ranges of the sensitivity indices are derived. Finally, a case study of a sheet metal assembly is presented and discussed to illustrate the applicability of these metrics.

scholarly journals Measuring Quality of Service in a Robotized Comprehensive Geriatric Assessment Scenario

2020 ◽  
Vol 10 (18) ◽  
pp. 6618
Author(s):  
Adrián Romero-Garcés ◽  
Jesús Martínez-Cruz ◽  
Juan F. Inglés-Romero ◽  
Cristina Vicente-Chicote ◽  
Rebeca Marfil ◽  
...  
Keyword(s):  
Quality Of Service ◽  
Functional Properties ◽  
Geriatric Assessment ◽  
Comprehensive Geriatric Assessment ◽  
User Preferences ◽  
Care Plans ◽  
Whole Process ◽  
Frail Elderly People ◽  
Individualised Care

Comprehensive Geriatric Assessment (CGA) is an integrated clinical process to evaluate frail elderly people in order to create therapy plans that improve their quality and quantity of life. The whole process includes the completion of standardized questionnaires or specific movements, which are performed by the patient and do not necessarily require the presence of a medical expert. With the aim of automatizing these parts of the CGA, we have designed and developed CLARC (smart CLinic Assistant Robot for CGA), a mobile robot able to help the physician to capture and manage data during the CGA procedures, mainly by autonomously conducting a set of predefined evaluation tests. Using CLARC to conduct geriatric tests will reduce the time medical professionals have to spend on purely mechanical tasks, giving them more time to develop individualised care plans for their patients. In fact, ideally, CLARC will perform these tests on its own. In parallel with the effort to correctly address the functional aspects, i.e., the development of the robot tasks, the design of CLARC must also deal with non-functional properties such as the degree of interaction or the performance. We argue that satisfying user preferences can be a good way to improve the acceptance of the robot by the patients. This paper describes the integration into the software architecture of the CLARC robot of the modules that allow these properties to be monitored at run-time, providing information on the quality of its service. Experimental evaluation illustrates that the defined quality of service metrics correctly capture the evolution of the aspects of the robot’s activity and its interaction with the patient covered by the non-functional properties that have been considered.

scholarly journals Optimization Parameters Tooling Design to Increase the Surface Quality of Orthotic Insole Shoes using the Taguchi Approach and Surface Response Methods

2019 ◽  
Vol 13 ◽  
pp. 47-52
Author(s):  
Baju Bawono ◽  
Paulus Wisnu Anggoro ◽  
Muhamad Tauviqirrahman ◽  
Jamari Jamari ◽  
Athanasius P. Bayuseno ◽  
...  
Keyword(s):  
Surface Quality ◽  
Taguchi Approach ◽  
Surface Response ◽  
Optimization Parameters ◽  
Tooling Design

scholarly journals Pengertian dan proses administrasi peserta didik

2019 ◽  
Author(s):  
Suci Febriyanti
Keyword(s):  
Educational Administration ◽  
Teaching Profession ◽  
Educational Process ◽  
Quality Of Education ◽  
Educational Goals ◽  
Whole Process ◽  
National Life ◽  
The Right ◽  
Professional Teaching

Abstrack- Educational Administration is the whole process of collaboration of two or more people by utilizing all available personnel and material resources and appropriate to achieve the educational goals that have been set effectively and efficiently. Professional teaching is a profession that is very important in the life of a nation, this is not because the educational position is very important in the context of national life. Educators are the dominant element in an educational process, so that the quality of education is largely determined by the quality of educators in carrying out their roles and duties in societ. Therefore the development of the teaching profession will have a major impact on improving the quality of education that is still lagging behind, as well as giving the right direction for students to play a role in the community to participate with the community in building the nation.

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