GEN-PRODIS Approach for Determining Total Cost in Disassembly Sequencing Problem

2015 ◽  
Vol 813-814 ◽  
pp. 1165-1169
Author(s):  
B. Josephin Sajo ◽  
J. Jayaprakash
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Product Life Cycle ◽  
Product Usage ◽  
Disassembly Sequence Planning ◽  
Total Cost ◽  
Sequencing Problem ◽  
Disassembly Sequence ◽  
Disassembly Sequencing ◽  
Product Disassembly

Disassembly sequence planning not only reduces product life cycle cost, but also greatly influences environmental impact. Industrial recycling and remanufacturing involves product disassembly to retrieve the desired parts and/or subassemblies by separating a product into its constituents. Disassembly has recently gained a great deal of attention in the literature due to its role in product recovery. Disassembly sequencing and planning is more challenging than assembly because its terminal goal is not necessarily fixed, but may depend on product usage and market demands for used parts and recycled materials. Moreover, disassembly is accompanied by more uncertainty in system structures and component conditions than is assembly. This paper presents recent methods for sequencing and process planning in disassembly and the applications to industrial products. This research is aimed at determining the optimal disassembly sequence as well as the helps to find the sequence dependent cost.

A Heuristic Approach for Disassembly Sequencing Problem for Robotic Disassembly Operations

2012 ◽  
pp. 438-447
Author(s):  
Ahmed ElSayed ◽  
Elif A. Kongar ◽  
Surendra M. Gupta
Keyword(s):  
Genetic Algorithm ◽  
Value Added ◽  
Recovery Process ◽  
Electronic Products ◽  
Sequencing Problem ◽  
Material Recovery ◽  
Disassembly Sequence ◽  
Robotic Disassembly ◽  
Efficient Recovery ◽  
Disassembly Sequencing

Electronic products enter the waste stream rapidly due to technological enhancements. Their parts and material recovery involve significant economic and environmental gain. To regain the value added to such products a certain level of disassembly may be required. Disassembly operations are often expensive and the complexity of determining the best disassembly sequence increases as the number of parts in a product grows. Therefore, it is necessary to develop methodologies for obtaining optimal or near optimal disassembly sequences to ensure efficient recovery process. To that end, this chapter introduces a Genetic Algorithm based methodology to develop disassembly sequencing for end-of-life products. A numerical example is presented to provide and demonstrate better understating and functionality of the algorithm.

Applying Life Cycle Six Sigma in Tolerance Design Methodology

2012 ◽  
Vol 443-444 ◽  
pp. 881-887
Author(s):  
Jian Jun Wu ◽  
Yi Zhen Wang
Keyword(s):  
Life Cycle ◽  
Six Sigma ◽  
Life Cycle Cost ◽  
Product Life Cycle ◽  
Quality Characteristic ◽  
Quality Level ◽  
Manufacturing Cost ◽  
Tolerance Design ◽  
Product Life ◽  
Sigma Level

Setting of tolerances to meet a required specification of quality characteristic and keep low manufacturing cost is one of common problems in the process quality control. But generally traditional tolerance design only focus on cost of manufacturing, few consider product Life Cycle Cost. In these situations, to obtain a satisfactory six sigma quality level as well as keep lower life cycle total cost should be considered. This paper expands tolerance optimization based on the manufacturing cost to the product life cycle cost, which can improve product quality to the six sigma level and keep lower LCC simultaneously.

Life Cycle Cost Modeling of Pumps Using an Activity Based Costing Methodology

2010 ◽  
Author(s):  
Laxman Yadu Waghmode ◽  
Anil Dattatraya Sahasrabudhe
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Product Life Cycle ◽  
Business Environment ◽  
Life Cycle Costing ◽  
Activity Based Costing ◽  
Global Business ◽  
Product Life ◽  
Traditional Costing ◽  
The Cost

In order to survive in today’s competitive global business environment, implementation of life cycle costing methodology with a greater emphasis on cost control could be one of the convincing approaches for the manufacturing firms. The product life cycle costing approach can help track and analyse the cost implications associated with each phase of product life cycle. Life cycle costing (LCC) practices with traditional costing methods may provide results that have a severe deviation from the real product LCC as it focuses on the cost of materials, labor and a low portion of overheads apportioned by the absorption rate to the product. Activity based costing (ABC) has emerged as one of the several innovative and more accurate costing methods in recent years. It is based on the principle that products or services consume activities and activities consume resources that generate costs. Thus, the ABC system focuses on calculating the costs incurred on performing the activities to manufacture a product. This paper presents a LCC modeling approach for estimating life cycle cost of pumps using activity based costing method. The study was conducted in a large pump manufacturing company from India that has significant global standing within its industry. Firstly, all the activities and cost drivers associated with the life cycle of a pump have been identified. A methodology for LCC analysis using ABC is then developed and it is applied to two different pumps manufactured by the same industry and the results obtained are presented.

scholarly journals Test sequencing problem arising at the design stage for reducing life cycle cost

2013 ◽  
Vol 26 (4) ◽  
pp. 1000-1007 ◽  
Author(s):  
Shigang Zhang ◽  
Zheng Hu ◽  
Xisen Wen
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Design Stage ◽  
Sequencing Problem

The Design of Family Cars’ Life Cycle Cost Data Warehouse Based on Web

2012 ◽  
Vol 433-440 ◽  
pp. 3425-3432
Author(s):  
Xiao Chuan Chen ◽  
Jin Fang Liu ◽  
Qing Li
Keyword(s):  
Life Cycle ◽  
Data Warehouse ◽  
Life Cycle Cost ◽  
Product Life Cycle ◽  
Cost Data ◽  
Web Pages ◽  
Programming Technique ◽  
Set Up ◽  
Meet Data ◽  
Business Requirements

This paper mainly focused on the life cycle cost collection of manufacturing product based on web and data organization methodology according to business requirements. The general features of manufacturing product life cycle cost were analyzed at first while cost collection objects and cost-related product features were chosen. After that, the software system was developed using .NET and C# web programming technique picking up cost data from credible websites on Internet. Then, life cycle cost data warehouse model was designed via features of cost collection object ending up with the establishment of data warehouse system acquiring cost data as data source. Basic data cleaning and data validation function was developed to meet data quality demand referring to data integrality, data authenticity and data time effectiveness. Finally, an exemplification system of family cars was set up successfully assembling 300 thousand plus records about 3500 car models in last 26 months. This system was proved to work without human manipulation over hours visiting 10 thousand web pages and collecting cost data. This proved the software was valid.

scholarly journals THE IMPACT OF PRODUCT LIFE CYCLE TECHNIQUE IN REDUCING COSTS AND ACHIEVING SUSTAINABLE DEVELOPMENT GOALS, A CASE STUDY IN THE RUSTAN STEEL STRUCTURE PRODUCTION COMPANY IN ERBIL

2021 ◽  
Vol 03 (07) ◽  
pp. 314-328
Author(s):  
Ghazi Abdulazeez SULAIMAN BAG ◽  
Rafiq Faraj MAHMOOD
Keyword(s):  
Corporate Governance ◽  
Life Cycle ◽  
Life Cycle Cost ◽  
Product Life Cycle ◽  
Steel Structures ◽  
Product Life ◽  
Technical Requirements ◽  
The Cost ◽  
The Impact

This research was - case study in Rstin company for the steel structures in Erbil- addressed the cost technique of product life cycle, as discussed the kinds, relevance and the stages of the life cycle of the product, also it referred to the corporate governance of discussing its inception the concept and importance of the principles, objectives, and mechanisms was addressed to the technical aspects of the overlap between the cost of the product life cycle corporate governance and show the appropriate techniques used in each stage of the life cycle of the product and how it achieved by a reduction of costs. The result of this study indicates that the integration between the product life cycle cost and corporate governance works on reduce costs through the various stages of product life cycle. It also concluded that this integration increases the company ability to compete in market which leads to rise in its market share and eventually lead to maximize the profit which has been achieved through the optimal use of a company available resources. It also found that the techniques of life cycle cost of the product cannot be applied without support of the company directors, throughout the technical requirements of the application. Corporate governance ensures directors of the company to utilize firm resources which makes the company to achieve several stakeholders' objectives.

Safety Loops Identification and Targeting Method Compliant With IEC61511 Requirements

2007 ◽  
Author(s):  
Philippe Cozzarin ◽  
Robert Brooks ◽  
Bret Dalton ◽  
Eric Kaufman ◽  
Kenneth Leary
Keyword(s):  
Life Cycle ◽  
Risk Reduction ◽  
Gas Turbine ◽  
Life Cycle Cost ◽  
Product Life Cycle ◽  
Systems Design ◽  
Maximum Probability ◽  
Guidance Note ◽  
Relative Safety ◽  
Level Of Risk

Safety Instrumented Systems are used in gas turbine (GT) systems design to mitigate potential hazardous situations that can arise from process deviations. International standard IEC61511, (released in 2003) sets out an approach for establishing the relative safety integrity of a safety-instrumented system to perform its prescribed action over the product life cycle (design, installation, and operation of safety instrumented systems). This unified approach is currently being adopted as an industry standard (e.g. UK HSE Guidance Note PM84 and ISO DIS 21789 dedicated to Gas Turbine Safety). Using this approach, each Safety Instrumented Function (SIF) must be evaluated to determine the level of risk reduction required for safe operation of the plant. Properly targeting the necessary level of risk reduction is critical. Underestimating the target risk reduction level can result in exceeding the plant tolerable risk threshold. Over-estimating the target risk reduction level can result in increased life cycle cost of the system design. This paper describes a scientific-numeric approach for targeting the safety integrity requirements that comply with IEC 61511. An Accident Scenario Review (ASR) for each major hazard identified is used to identify the SIF and associated maximum probability of failure on demand (for demand mode) or maximum probability of dangerous failure per hour (for continuous mode). This method can be used for systems previously designed or in operation. The process integrates field experience to validate and justify model assumptions.

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