scholarly journals Aspects for Better Understanding of Engineering Changes in Shipbuilding Projects: In-Depth Case Study

2019 ◽  
pp. 588-595
Author(s):  
Natalia Iakymenko ◽  
Marco Semini ◽  
Jan Ola Strandhagen
Keyword(s):  
Engineering Changes

Part Change Management: A Case Study on Automotive OEM Development and Production Perspectives

2017 ◽  
Author(s):  
Stephan Knackstedt ◽  
Joshua D. Summers
Keyword(s):  
Statistical Analysis ◽  
Change Management ◽  
Employee Perceptions ◽  
Management Process ◽  
Engineering Change ◽  
Engineering Change Management ◽  
Production Development ◽  
Engineering Changes

Due to interest in aspects such as process, strategies, and tools of engineering changes expressed in a literature review, a case study was done on a major automotive OEM to assess the perceived quality of its part engineering change management process and supporting system through its employees’ eyes. A combination of 12 interviews lasting 12 hours and 46 written surveys was used to capture the views of participants from all major functions found at the research and development (R&D) headquarters of the OEM: Purchasing, Production, Development, and one group consisting of all other functions (“Other”). Statistical analysis was performed to identify statistically significant differences between employee perceptions of an engineering change management system among different departments, amount of use, and years of use. It was found that statistically significant differences exist in terms of understanding the usability of the system between different departments and also between different years of experience.

Demonstrating set-based design techniques: an unmanned aerial vehicle case study

2019 ◽  
Vol 17 (4) ◽  
pp. 339-355 ◽  
Author(s):  
Colin Small ◽  
Gregory S Parnell ◽  
Ed Pohl ◽  
Simon R Goerger ◽  
Matthew Cilli ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Future Research ◽  
Trade Off ◽  
Design Concepts ◽  
Systems Research ◽  
Aerial Vehicle ◽  
Engineering Changes ◽  
Set Based Design ◽  
Tradespace Exploration

The Engineered Resilient Systems research program seeks to improve decision making in the Analysis of Alternatives process by leveraging model-based engineering (MBE) early in the design process to develop more resilient systems. Traditional tradespace exploration using point-based design often converges quickly to an initial baseline design concept with subsequent engineering changes to modify the design. However, this process can lead to significant cost growth if the initial concept is not able to meet requirements or if the revised design is not affordable. Enabled by MBE, set-based design (SBD) considers sets of all possible design concepts and down-selects design concepts to converge to a final design using insights into design trade-off analysis, modeling and simulation, and test data. Using a notional unmanned aerial vehicle case study with low-fidelity physics-based models and an open source Excel® add-in called SIPmath©, this research implements an integrated MBE trade-off analytics framework that simultaneously generates numerous SBDs using parametric performance and cost models and evaluates the designs in the value and cost tradespace. In addition, this research explores incorporating resilience quantification and uncertainty into SBD trade-off analysis. Future research is needed to validate the use of SBD with low-fidelity models for tradespace exploration in early system design.

scholarly journals On the Use of Self-Organizing Map for Text Clustering in Engineering Change Process Analysis: A Case Study

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Massimo Pacella ◽  
Antonio Grieco ◽  
Marzia Blaco
Keyword(s):  
Change Process ◽  
Good Practice ◽  
Text Clustering ◽  
Self Organizing Map ◽  
Use Of Self ◽  
Engineering Change ◽  
Engineering Changes ◽  
The Impact ◽  
Self Organizing

In modern industry, the development of complex products involves engineering changes that frequently require redesigning or altering the products or their components. In an engineering change process, engineering change requests (ECRs) are documents (forms) with parts written in natural language describing a suggested enhancement or a problem with a product or a component. ECRs initiate the change process and promote discussions within an organization to help to determine the impact of a change and the best possible solution. Although ECRs can contain important details, that is, recurring problems or examples of good practice repeated across a number of projects, they are often stored but not consulted, missing important opportunities to learn from previous projects. This paper explores the use of Self-Organizing Map (SOM) to the problem of unsupervised clustering of ECR texts. A case study is presented in which ECRs collected during the engineering change process of a railways industry are analyzed. The results show that SOM text clustering has a good potential to improve overall knowledge reuse and exploitation.

Managing engineering change requirements during the product development process

2017 ◽  
Vol 26 (2) ◽  
pp. 171-186 ◽  
Author(s):  
Inayat Ullah ◽  
Dunbing Tang ◽  
Qi Wang ◽  
Leilei Yin ◽  
Ishfaq Hussain
Keyword(s):  
Product Development ◽  
Change Management ◽  
Development Process ◽  
Product Development Process ◽  
Engineering Change ◽  
New Approach ◽  
Engineering Change Management ◽  
Engineering Changes ◽  
Optical Mouse

Product redesign is not a straightforward task, specifically for complex commodities. Engineering change requirements can be evoked in any phase of the product development process, thus making engineering change management a challenging task. The motive of this study is to explore the best possible way of managing engineering change requirements taking execution sequence of change requirements into consideration. In this article, a new approach supporting engineering change requirements implementation sequence, by considering the risk associated with engineering changes, is presented. The risk of the redesign is hard to foresee since the engineering change effects are being dispersed from the instigating component to other associated components. In this article, the term of rework-risk is used for the amount of rework needed to be done to redesign the products’ components. The practicality of suggested method is analyzed using the redesign of an optical mouse as a case study. Managing engineering change requirements in a group with proper sequence can ensue with a 15% decrease in the redesign duration as compared with the prompt implementation of engineering change requirements. Conversely, it can also cause 36.23% increase in the redesign duration, if not handled in an appropriate sequence. The results from a single, simple case, indicates that running engineering change requirement batches can be beneficial.

scholarly journals Changeability and agility enablers in one-of-a-kind product development and design processes

2021 ◽  
Author(s):  
M. Varl ◽  
J. Duhovnik ◽  
J. Tavčar
Keyword(s):  
Product Development ◽  
Current Status ◽  
Design Strategies ◽  
Smart Products ◽  
Generalized Framework ◽  
Engineering Changes ◽  
Smart Industry ◽  
Alternative Routes ◽  
Smart Factories

AbstractThe smart factories that are already beginning to appear employ a completely new approach to product creation. Smart products are uniquely identifiable and know both their current status and alternative routes to achieving their target state. Smart factories allow individual customer requirements to be met, meaning that even one-off items can be manufactured profitably. In smart industry, dynamic business and engineering processes enable last-minute changes to design and production, delivering the ability to respond flexibly to disruptions and failures on behalf of suppliers. This paper presents a case study of product development and design process renovation according to changeability paradigm in one-of-a-kind industrial environment. It demonstrates how integration of changeability with agile design strategies crucially contribute to improve the operations of a highly individualized product development business. Successful management of ‘never-ending’ engineering changes appears to be the most important aspect in this field. Contribution of the presented work is a generalized framework that demonstrates how companies in such specific environments can improve competitiveness through the utilization of changeability concepts. The included case study validated the proposed changeability model and offers valuable insights into how to implement this in practice.

Ergonomic Improvement of a Machine Maintenance Procedure: A Case Study

1992 ◽  
Vol 36 (10) ◽  
pp. 684-687
Author(s):  
Kelly A. Eckbreth
Keyword(s):  
Personal Protective Equipment ◽  
Job Analysis ◽  
Protective Equipment ◽  
Medical Department ◽  
Machine Maintenance ◽  
Maintenance Work ◽  
Engineering Changes

An employee who performs maintenance work on machinery used in the manufacture of electronics equipment reported to the company medical department and was diagnosed with elbow tendinitis. An ergonomic job analysis was conducted and solutions implemented to prevent future injuries. Significant improvements were realized as a result of new tools, engineering changes, personal protective equipment, process changes, and ergonomic training. The most significant were the reduction of musculoskeletal stresses suffered by these workers as well as substantial reductions in machine downtime per year.

The Genesis and Internal Dynamics of El Salvador's People's Revolutionary Army, 1970–1976

2014 ◽  
Vol 38 (01) ◽  
pp. 102-129
Author(s):  
ALBERTO MARTÍN ÁLVAREZ ◽  
EUDALD CORTINA ORERO
Keyword(s):  
Latin America ◽  
El Salvador ◽  
Early Years ◽  
Left Wing ◽  
Internal Dynamics ◽  
Internal Coherence ◽  
The 1960S

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

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