scholarly journals CAD integrated automatic recognition of weld paths

2021 ◽  
Author(s):  
Tuan Anh Tran ◽  
Andrei Lobov ◽  
Tord Hansen Kaasa ◽  
Morten Bjelland ◽  
Ole Terje Midling
Keyword(s):  
Life Cycle ◽  
Spatial Analysis ◽  
Product Life Cycle ◽  
Real Life ◽  
Automatic Recognition ◽  
Integrated Method ◽  
Weld Joints ◽  
Related Information ◽  
Almost All ◽  
Sequential Assembly

AbstractIn this paper, a CAD integrated method is proposed for automatic recognition of potential weld locations in large assembly structures predominantly comprised of weld joints. The intention is to reduce the total man-hours spent on manually locating, assigning, and maintaining weld-related information throughout the product life cycle. The method utilizes spatial analysis of extracted stereolithographic data in combination with available CAD functions to determine whether the accessibility surrounding a given intersection edge is sufficient for welding. To demonstrate the method, a system is developed in Siemens NX using their NXOpen Python API. The paper presents the application of the method to real-life use cases in varying complexity in cooperation with industrial partners. The system is able to correctly recognize almost all weld lines for the parts considered within a few minutes. Some exceptions are known for particular intersection lines located deep within notched joints and geometries weldable through sequential assembly, which are left as a subject to further works.

scholarly journals Assessing the performance of indicators during their life cycle: the mixed QUID method

2019 ◽  
Vol 32 (1) ◽  
pp. 12-19
Author(s):  
Philippe Michel ◽  
Laurie Fraticelli ◽  
Pierre Parneix ◽  
Valentin Daucourt ◽  
Olivier Farges ◽  
...  
Keyword(s):  
Life Cycle ◽  
Evaluation Method ◽  
Real Life ◽  
Public Disclosure ◽  
Integrated Method ◽  
Clear Cut ◽  
Modified Delphi ◽  
Health Authorities ◽  
Set Up ◽  
Operational Issues

Abstract Background Quality indicators (QI) are mandatory in French hospitals. After a decade of use, the Ministry of Health set up an expert workgroup to enhance informed decision-making regarding currently used national QI, i.e. to propose a decision of withdrawing, revising or continuing their use. We report the development of an integrated method for a comprehensive appraisal of quality/safety indicators (QI) during their life cycle, for three purposes, quality improvement, public disclosure and regulation purposes. The method was tested on 10 national QI on use for up to 10 years to identify operational issues. Methods A modified Delphi technique to select relevant criteria and a development of a mixed evaluation method by the workgroup. A ‘real-life’ test on 10 national QI. Results Twelve criteria were selected for the appraisal of QI used for regulation goals, 11 were selected for hospital improvement and seven for public disclosure. The perceived feasibility and relevance were studied including hospital workers, patients and health authorities professionals; the scientific soundness of the indicator development phase was reviewed by analyzing reference documents; the metrological performance (limited to the discriminatory power and dynamics of change during the life cycle dimensions) was analyzed on the national datasets. Applied to the 10 QI, the workgroup proposed to withdraw four of them and to modify or suspend the six others. Conclusions The value of the method was supported by the clear-cut conclusions and endorsement of the proposed decisions by the health authorities.

Forecasting product returns for recycling in Indian electronics industry

2014 ◽  
Vol 11 (1) ◽  
pp. 102-114 ◽  
Author(s):  
Saurabh Agrawal ◽  
Rajesh K. Singh ◽  
Qasim Murtaza
Keyword(s):  
Supply Chain ◽  
Life Cycle ◽  
Product Life Cycle ◽  
Real Life ◽  
Supply Chain Design ◽  
Reverse Supply Chain ◽  
Product Returns ◽  
Supply Chain System ◽  
Product Life ◽  
Content Type

Purpose – The purpose of this paper is to develop a model for forecasting product returns to the company for recycling in terms of quantity and time. Design/methodology/approach – Graphical Evaluation and Review Technique (GERT) has been applied for developing the forecasting model for product returns. A case of Indian mobile manufacturing company is discussed for the validation of this model. Survey conducted by the company and findings from previous research were used for data collection on probabilities and product life cycle. Findings – Product returns for their recycling are stochastic, random and uncertain. Therefore, to address the uncertainty, randomness and stochastic nature of product returns, GERT is very useful tool for forecasting product returns. Practical implications – GERT provides the visual picture of the reverse supply chain system and helps in determining the expected time of product returns in a much easier way but it requires probabilities of different flows and product life cycle. Both factors vary over a period, so require data update time to time before implementation. Originality/value – This model is developed by considering all possible flows of sold products from customer to their reuse, store or recycle or landfill. First time this type of real life flows have been considered and GERT has been applied for forecasting product returns. This model can be utilized by managers for better forecasting that will help them for effective reverse supply chain design.

A Framework for Evaluating R&D Impacts and Supply Chain Dynamics Early in a Product Life Cycle. Looking inside the black box of innovation

2014 ◽  
Author(s):  
Gretchen Jordan ◽  
Jonathan Mote ◽  
Rosalie Ruegg ◽  
Thomas Choi ◽  
Angela Becker-Dippmann
Keyword(s):  
Supply Chain ◽  
Life Cycle ◽  
Product Life Cycle ◽  
Black Box ◽  
Chain Dynamics ◽  
Product Life ◽  
Supply Chain Dynamics

Competitive Negotiation Tactics and Kraljic Portfolio Category in SCM

2016 ◽  
Vol 5 (3) ◽  
Author(s):  
Sundar Narsimhan ◽  
Devi Prasad Ungarala
Keyword(s):  
Supply Chain ◽  
Real Life ◽  
Relational Self ◽  
Business Negotiation ◽  
Value Sharing ◽  
Conflict Situations ◽  
Carrier Selection ◽  
Negotiation Tactics ◽  
Cost Competitiveness ◽  
Almost All

Negotiation outcomes are broadly classified as Distributive/Competitive and Integrative/Collaborative. Substantial academic and research negotiation literature of the past two decades commend adoption of a collaborative style for almost all real-life conflict situations. Business negotiation materials and relational self-construal psychology studies present a picture of contrast. Negotiations being at the heart of buyer-supplier interactions drive value sharing and value co-creation aspects of modern Supply Chains. Pricing, product selection, delivery terms, shipment schedules, carrier selection, volume discounts, product training, and quality standards are all more often than not subject to negotiation between supply chain members. Negotiation interactions ensuing preparation and determination of BATNA, entail use of Competitive or Collaborative Tactics. Buyers are the protagonists in procurement organizations. And procurement often accounts for the lions share of an organizations budget. Small wonder, they drive cost competitiveness together with the firms partners. Indeed this is true of the overall Supply Chain. An Indian pharmaceutical company was chosen for the qualitative research in the form of a case study. The most popular competitive negotiation tactics were chosen for this study and buyers were asked to spell out the negotiation techniques that they deployed, material-wise (with the corresponding suppliers). This data when plotted material-wise and grouped Kraljic category-wise circumstantiates the use of competitive tactics in all Kraljic categories, marked by a refreshing nuanced approach for different categories, with intensity varying for different categories. Interviews with buyers and the key informant to discern the rationale behind use of those negotiation tactics, however, brought out a pattern despite the refreshing tendency not to straight-jacket.

scholarly journals Eco-Ontology for supporting Interoperability in Product Life Cycle within Product Sustainability

2021 ◽  
Vol 1092 (1) ◽  
pp. 012049
Author(s):  
M Mohammed ◽  
A Romli ◽  
R Mohamed ◽  
A Noormazlinah
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Product Life

Life-Cycle Engineering Design

1995 ◽  
Vol 117 (B) ◽  
pp. 42-47 ◽  
Author(s):  
K. Ishii
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Functional Performance ◽  
Semantic Network ◽  
Research Issues ◽  
Life Cycle Engineering ◽  
Engineering Research ◽  
Design Representation ◽  
Life Cycle Design ◽  
Representation Scheme

Life-cycle engineering seeks to incorporate various product life-cycle values into the early stages of design. These values include functional performance, manufacturability, serviceability, and environmental impact. We start with a survey of life-cycle engineering research focusing on methodologies and tools. Further, the paper addresses critical research issues in life-cycle design tools: design representation and measures for life-cycle evaluation. The paper describes our design representation scheme based on a semantic network that is effective for evaluating the structural layout. Evaluation measures for serviceability and recyclability illustrate the practical use of these representation schemes.

scholarly journals Sustainability Requirements of Digital Twin-Based Systems: A Meta Systematic Literature Review

2021 ◽  
Vol 11 (12) ◽  
pp. 5519
Author(s):  
Rui Carvalho ◽  
Alberto Rodrigues da Silva
Keyword(s):  
Life Cycle ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Environmental Sustainability ◽  
Product Life Cycle ◽  
Data Communication ◽  
Three Dimensions ◽  
Digital Twin ◽  
The Subject ◽  
Reducing Costs

Sustainable development was defined by the UN in 1987 as development that meets the needs of the present without compromising the ability of future generations to meet their own needs, and this is a core concept in this paper. This work acknowledges the three dimensions of sustainability, i.e., economic, social, and environmental, but its focus is on this last one. A digital twin (DT) is frequently described as a physical entity with a virtual counterpart, and the data, connections between the two, implying the existence of connectors and blocks for efficient and effective data communication. This paper provides a meta systematic literature review (SLR) (i.e., an SLR of SLRs) regarding the sustainability requirements of DT-based systems. Numerous papers on the subject of DT were also selected because they cited the analyzed SLRs and were considered relevant to the purposes of this research. From the selection and analysis of 29 papers, several limitations and challenges were identified: the perceived benefits of DTs are not clearly understood; DTs across the product life cycle or the DT life cycle are not sufficiently studied; it is not clear how DTs can contribute to reducing costs or supporting decision-making; technical implementation of DTs must be improved and better integrated in the context of the IoT; the level of fidelity of DTs is not entirely evaluated in terms of their parameters, accuracy, and level of abstraction; and the ownership of data stored within DTs should be better understood. Furthermore, from our research, it was not possible to find a paper discussing DTs only in regard to environmental sustainability.

scholarly journals Attributional & Consequential Life Cycle Assessment: Definitions, Conceptual Characteristics and Modelling Restrictions

2021 ◽  
Vol 13 (13) ◽  
pp. 7386
Author(s):  
Thomas Schaubroeck ◽  
Simon Schaubroeck ◽  
Reinout Heijungs ◽  
Alessandra Zamagni ◽  
Miguel Brandão ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Product Life Cycle ◽  
Sustainability Assessment ◽  
Consequential Life Cycle Assessment ◽  
Modelling Framework ◽  
Potential Environmental Impact ◽  
Reference Environment ◽  
The Impact

To assess the potential environmental impact of human/industrial systems, life cycle assessment (LCA) is a very common method. There are two prominent types of LCA, namely attributional (ALCA) and consequential (CLCA). A lot of literature covers these approaches, but a general consensus on what they represent and an overview of all their differences seems lacking, nor has every prominent feature been fully explored. The two main objectives of this article are: (1) to argue for and select definitions for each concept and (2) specify all conceptual characteristics (including translation into modelling restrictions), re-evaluating and going beyond findings in the state of the art. For the first objective, mainly because the validity of interpretation of a term is also a matter of consensus, we argue the selection of definitions present in the 2011 UNEP-SETAC report. ALCA attributes a share of the potential environmental impact of the world to a product life cycle, while CLCA assesses the environmental consequences of a decision (e.g., increase of product demand). Regarding the second objective, the product system in ALCA constitutes all processes that are linked by physical, energy flows or services. Because of the requirement of additivity for ALCA, a double-counting check needs to be executed, modelling is restricted (e.g., guaranteed through linearity) and partitioning of multifunctional processes is systematically needed (for evaluation per single product). The latter matters also hold in a similar manner for the impact assessment, which is commonly overlooked. CLCA, is completely consequential and there is no limitation regarding what a modelling framework should entail, with the coverage of co-products through substitution being just one approach and not the only one (e.g., additional consumption is possible). Both ALCA and CLCA can be considered over any time span (past, present & future) and either using a reference environment or different scenarios. Furthermore, both ALCA and CLCA could be specific for average or marginal (small) products or decisions, and further datasets. These findings also hold for life cycle sustainability assessment.

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