Requirements analysis for decision-support system design: evidence from the automotive industry

The purpose of this paper is to outline the requirements analysis that was carried out to support the development of a system that allows engineers to view real-time data integrated from multiple silos such as Product Lifecycle Management (PLM) and Warranty systems, in a single and visual environment. The outcome of this study provides a clear understanding of how engineers working in different phases of the product-lifecycle could utilise such information to improve the decision making process and as a result design better products. This study uses data collected via in-depth semi-structured interviews and workshops that includes people working in various roles within the automotive sector. In order to demonstrate the applicability this approach, SysML diagrams are also provided

Experimental study and numerical modelling of woven fabric kenaf fiber composites hybrid adhesively bonded-bolted joints

Couple with natural fiber composite parts, hybrid joints provide better joint strength than using separate joints. There are limited studies on structures response and strength prediction work on hybrid joints that limits its applicability. The aim of present study is to conduct experimental datasets on woven fabric kenaf fiber reinforced polymer (KFRP) and carbon fiber reinforced polymer (CFRP) composite hybrid joints under quasi-static testing and to carry out the strength prediction works subsequently by implementing physically-based traction-separation constitutive law. Testing series investigated includes variation of joint types, normalized W/d = 2 to 5, reinforcing fiber composites, lay-up types, plate thickness and bolt loads. Experimental observations and bearing stress at failures were conducted, the datasets were then used as validation works in FEA modelling. All KFRP hybrid joint series demonstrated net-tension failure mode associated to stress concentration at the vicinity of notch tip. Initially, strength prediction works were attempted by implementing various numerical approaches and fully XFEM techniques was adopted to all series as it provides promising results with better physically representation and less computational time. Good agreements between experimental datasets and predicted bearing stress at failure were found in KFRP hybrid joints with average discrepancy of less than 23%. It was found that combinations of thicker and cross-ply lay-up gives the best prediction of less than 2 % (where experimental datasets and FEA output were given as 201 N/mm2 and 198 N/mm2 respectively) due to better repetitive lay-up with implementation of smeared-out properties. Less significant effects from bolt loads and reinforcing fibers were found for both joint types. It can be concluded that fully XFEM technique able to provide as a unified prediction tools in hybrid joints of most composite materials with reasonable agreements

Manufacturing in Scotland

Set against the backdrop of current thinking that UK manufacturing needs to move into higher value, this report, commissioned on behalf of the Scottish Manufacturing Advisory Service (SMAS) Board, set out to: Give an account of the current status of manufacturing SME’s in Scotland including current activities, aspirations, strategies and challenges facing them; Assess the progress Scotland has made towards high value manufacturing; Make recommendations as to the type of support needed to enable Scottish manufacturing SMEs invest in their long-term future. The resulting report is based on findings of a survey that delivered responses from 435 Scottish manufacturing companies and in-depth interviews with directors of 45 companies. This research was carried out during the period April to September 2008. Our research suggests that there have been significant shifts within manufacturing SMEs in Scotland. The most notable shifts include: A shift in the basis of competition. Our research suggests that the primary basis of competition for Scottish manufacturing SMEs is not price. Increasingly Scottish SMEs are adding value through quality and customer service. A shift in the nature and scope of operations. Whilst the primary business function of manufacturing companies remains production, there is evidence of increasing levels of design and service activity taking place. Companies reported they expected this trend to continue as the shift in the basis of competition away from price towards innovation and customer service gains pace. These changes suggest a move towards high value manufacturing. However there are major challenges facing Scottish SMEs if they are to compete on new value propositions. Of particular concern are: Lack of strategic vision and understanding of the capabilities and competencies needed to compete on the new value propositions. Whilst companies largely recognise the need to improve manufacturing efficiency, many have not embraced the need to develop and improve processes that deliver value to the customer (eg. Customer service processes, new product development processes etc). If customer service, innovation and quality are key differentiators and the way they add value, then companies need to ensure they have sustainable processes to deliver this value. Changes in operational activity have tended to be the result of evolution and opportunity rather than coherent operational strategy. Many companies need help in generating and enacting strategic change There is a lack of appreciation of the potential value of innovation in delivering value (and indeed the understanding of innovation in its many guises). Almost all companies interviewed reported some problems finding and retaining staff. Whilst in some cases labour shortages were due to specific skills and knowledge, there was also a general problem recruiting people with basic employability who had a desire to work in manufacturing. The poor image of manufacturing was a worry to the vast majority of interviewees. Many companies recognised the potential to exploit opportunities overseas. Some alluded to the fact that it might not be enough to market and export overseas, but that a manufacturing presence may be needed to fully exploit the opportunity. In terms of the support needed, companies stated that they would be looking increasingly for help and support in the areas of manufacturing efficiency and sales and marketing. Supply chain was also an area where companies reported they would be looking for help and support. Companies also suggested that they would like to see improvements in terms of “community”, with a number of interviewees looking for help in accessing not just help and support, but also introductions to other organisations. The research team believe that whilst not always recognised by the companies, support is also needed in the areas of strategy (and linked to this leadership) and in developing and improving processes that add value. Finally, the research suggests worryingly low levels of manufacturing entrepreneurship in Scotland, with only 3% of companies surveyed established within the past 5 years. This is worthy of further investigation. 4 Key findings and recommendations are expanded upon in Table 1. However the key recommendations can be summarised as: Manufacturing SMEs continue to require support in manufacturing efficiency, sales and marketing and supply chain. As companies move away from price as the main basis for competition and towards alternative value propositions, they also need support in developing and enacting strategy. Of particular urgency, companies need help in developing and improving the processes and capabilities that deliver value (beyond traditional manufacturing) Establishing processes that support innovation and product development will be central to the sustainability of many Scottish SMEs Further work needs to be done to investigate the apparent low levels of manufacturing start-ups Further work is needed to understand the areas where Scottish SMEs can actually compete on high volume /low complexity – often due to “localisation” factors Consideration should be given to supporting companies who wish to establish manufacturing overseas to exploit global opportunitiesA skills strategy must be created in line with the needs of manufacturing industry The poor image of manufacturing in Scotland needs to be addresse

Correct and Control Complex IoT Systems: Evaluation of a Classification for System Anomalies

In practice there are deficiencies in precise interteam communications about system anomalies to perform troubleshooting and postmortem analysis along different teams operating complex IoT systems. We evaluate the quality in use of an adaptation of IEEE Std. 1044-2009 with the objective to differentiate the handling of fault detection and fault reaction from handling of defect and its options for defect correction. We extended the scope of IEEE Std. 1044-2009 from anomalies related to software only to anomalies related to complex IoT systems. To evaluate the quality in use of our classification a study was conducted at Robert Bosch GmbH. We applied our adaptation to a postmortem analysis of an IoT solution and evaluated the quality in use by conducting interviews with three stakeholders. Our adaptation was effectively applied and interteam communications as well as iterative and inductive learning for product improvement were enhanced. Further training and practice are required.Comment: Submitted to QRS 2020 (IEEE Conference on Software Quality, Reliability and Security

An Ontology for Product-Service Systems

Industries are transforming their business strategy from a product-centric to a more service-centric nature by bundling products and services into integrated solutions to enhance the relationship between their customers. Since Product- Service Systems design research is currently at a rudimentary stage, the development of a robust ontology for this area would be helpful. The advantages of a standardized ontology are that it could help researchers and practitioners to communicate their views without ambiguity and thus encourage the conception and implementation of useful methods and tools. In this paper, an initial structure of a PSS ontology from the design perspective is proposed and evaluated

Winning customer loyalty in an automotive company through Six Sigma: a case study

Six Sigma is a disciplined approach to improving product, process and service quality. Since its inception at Motorola in the mid 1980s Six Sigma has evolved significantly and continues to expand to improve process performance, enhance business profitability and increase customer satisfaction. This paper presents an extensive literature review based on the experiences of both academics and practitioners on Six Sigma, followed by the application of the Define, Measure, Analyse, Improve, Control (DMAIC) problem-solving methodology to identify the parameters causing casting defects and to control these parameters. The results of the study are based on the application of tools and techniques in the DMAIC methodology, i.e. Pareto Analysis, Measurement System Analysis, Regression Analysis and Design of Experiment. The results of the study show that the application of the Six Sigma methodology reduced casting defects and increased the process capability of the process from 0.49 to 1.28. The application of DMAIC has resulted in a significant financial impact (over U.S. $110 000 per annum) on the bottom-line of the company

E-logistics of agribusiness organisations

Logistics is one of the most important agribusiness functions due to the idiosyncrasy of food products and the structure of food supply chain. Companies in the food sector typically operate with poor production forecasting, inefficient inventory management, lack of coordination with supply partners. Further, markets are characterised by stern competition, increasing consumer demands and stringent regulation for food quality and safety. Large agribusiness corporations have already turned to e-logistics solutions as a means to sustain competitive advantage and meet consumer demands. There are four types of e-logistics applications: (a) Vertical alliances where supply partners forge long-term strategic alliances based on electronic sharing of critical logistics information such as sales forecasts and inventory volume. Vertical alliances often apply supply chain management (SCM) which is concerned with the relationship between a company and its suppliers and customers. The prime characteristic of SCM is interorganizational coordination: agribusiness companies working jointly with their customers and suppliers to integrate activities along the supply chain to effectively supply food products to customers. E-logistics solutions engender the systematic integration among supply partners by allowing more efficient and automatic information flow. (b) e-tailing, in which retailers give consumers the ability to order food such as groceries from home electronically i.e. using the Internet and the subsequent delivery of those ordered goods at home. (c) Efficient Foodservice Response (EFR), which is a strategy designed to enable foodservice industry to achieve profitable growth by looking at ways to save money for each level of the supply chain by eliminating inefficient practices. EFR provides solutions to common logistics problems, such as transactional inefficiency, inefficient plant scheduling, out-of-stocks, and expedited transportation. (d) Contracting, a means of coordinating procurement of food, beverages and their associated supplies. Many markets and supply chains in agriculture are buyer-driven where the buyers in the market tend to set prices and terms of trade. Those terms can include the use of electronic means of communication to support automatic replenishment of goods, management of supply and inventory. The results of the current applications of e-logistics in food sector are encouraging for Greek agribusiness. Companies need to become aware of and evaluate the value-added by those applications which are a sustainable competitive advantage, optimisation of supply chain flows, and meeting consumer demands and food safety regulations. E-business diffusion has shown that typically first-movers gain a significant competitive advantage and the rest companies either eventually adopt the new systems or see a significant decline in their trading partners and perish. E-logistics solutions typically require huge investments in hardware and software and skilled personnel, which is an overt barrier for most Greek companies. Large companies typically are first-movers but small and medium enterprises (SMEs) need institutional support in order to become aware that e-logistics systems can be fruitful for them as well