TY - GEN A1 - Rich, Beatrice Monique A1 - Hülse, Max A1 - Woll, Ralf T1 - The first impression counts: View area investigations on vehicles T2 - Proc. 22nd Quality Manage. and Organisational Develop. Int. Conf. on Quality and Service Sciences N2 - Purpose: Based on a request from a automobile manufacturer, a feasibility study was carried out to compare the quality standards of different target groups with regard to defect perception. The following question developed as a result of the study: Do customers subdivide products (especially vehicles) into visual areas which they assign different relevance to the perception and the significance of defects? Automobile manufacturers classify their vehicles into viewing areas in order to assess the significance of defects during the product audit better. The study has shown that customers attach a different significance to the areas of view than it is specified in the company standard. A customer can perceive a seemingly insignificant defect in viewing area C (below the vehicle) as extremely significant. In order to investigate this in more detail, a visual field inspection on vehicles was conducted. Methodology/Approach: The study was carried out on 2 consecutive days. The test persons were asked to put themselves into the "real" situation that they pick up their purchased new car and see it for the first time. The test persons were shown imperfections on varnish samples. They were asked to imagine that the shown imperfections were on the respective vehicles and to evaluate them on the prepared questionnaires. Each test person filled out one questionnaire for each imperfection. The evaluation took place on a scale with the following breakdown: I would not notice (green)/ I would notice, but would not annoy me (yellow)/ I would notice and it would annoy me (orange)/ I would notice and I would complain about (pink). Findings: Before the study was carried out, various hypotheses were formulated, which were either accepted or rejected based on the study results. For example, the position of the imperfection with respect to the driver's or passenger's side is not relevant for the evaluation of an imperfection. However, the gender of the test person has an influence on the evaluation. Female test persons are somewhat more critical than males. The color of the car can also have an influence on the evaluation of imperfections. Research Limitation: The significance of the results may be limited by the selection of test persons. Most of them are still students. Furthermore, the test vehicles are of a certain brand and a certain type, so that a transferability of the results to other vehicle types could be critically discussed. The developed study design works and should be repeated with a larger number of participants and possibly different vehicle types. Value of paper: Automobile manufacturers put enormous effort into the quality control of their vehicles. In terms of cost-benefit considerations, automobile manufacturers have to ask themselves: Do we use the right standards, criteria and methods for the quality control of our vehicles? Since customer orientation is becoming increasingly focused (f. ex. based on ISO 9001:2015 and the general competitive pressure), studies such as this one help to better understand customers and integrate their point of view into everyday production. Y1 - 2019 UR - https://www.ism.lu.se/en/sites/ism.lu.se.en/files/qmod_2019_final_program_2019_0930.pdf ER - TY - GEN A1 - Worlitz, Jane A1 - Vu, Duy Linh A1 - Hettling, Laura A1 - Woll, Ralf T1 - Perceived Waiting Time and Waiting Satisfaction: a Systematic Literature Review T2 - Proceedings, 22st QMOD-ICQSS Conference in Krakau, 2019 N2 - Purpose: The waiting time of the customer has an impact on the quality evaluation of services. Therefore, strategies to reduce waiting time are required. In addition to strategies to reduce actual waiting time, strategies to reduce the perceived waiting time are investigated. Several factors influencing perceived waiting time and waiting satisfaction of customers. The purpose of the following research is to capture the current state of perceived waiting time and waiting satisfaction through a systematic literature review. Design/methodology/approach: Among other, the paper will answer the following questions. “In which industries are perceived waiting time and waiting satisfaction particularly frequently investigated?” “How does the interest of the topic change over time?” “Which factors influence perceived waiting time and customer waiting satisfaction?” The work presented in this paper is based on a systematic literature review of 152 empirical studies that were published on perceived waiting time and waiting satisfaction in academic databases from 1984 to 2018. Findings: Pre-process waiting is the waiting period before the service is provided. Pre-process waiting is considered in a large number of studies. The majority of the studies relate to the health sector. Mostly surveys were based on questionnaires. 121 different characteristics of factors were identified in the studies. Originality/Value of paper: Research results on the topic of perceived waiting time and waiting satisfaction were structured and presented thematically, by a systematic literature analysis. This provides the basis for further developments in the subject area. The results enable new ways to apply strategies to reducing perceived waiting time and increasing waiting satisfaction. KW - acceptable waiting time; customer satisfaction; positive waiting; service quality; waiting satisfaction; waiting time Y1 - 2019 UR - https://www.researchgate.net/publication/338336943_Perceived_Waiting_Time_and_Waiting_Satisfaction_a_Systematic_Literature_Review ER - TY - GEN A1 - Kazula, Stefan A1 - Rich, Beatrice Monique A1 - Höschler, Klaus A1 - Woll, Ralf T1 - Interest High School Students in STEM Studies, while Preparing STEM Students for Leading Positions T2 - 2021 IEEE Global Engineering Education Conference Y1 - 2021 SN - 978-1-7281-8478-4 SN - 978-1-7281-8479-1 U6 - https://doi.org/10.1109/EDUCON46332.2021.9454011 VL - 2021 SP - 910 EP - 914 ER - TY - GEN A1 - Goldmann, Christine A1 - Woll, Ralf T1 - Application of gamification elements in university education to improve the learning process T2 - 15th International Conference of Education, Research and Innovation, November 7th-9th, 2022, ICERI Proceedings N2 - The learning process can be divided into the sub-processes of understanding, storing, retrieving, and using the acquired knowledge. The acquisition of knowledge takes place through facts and statements based on the subject matter and by repetition in exercises. Providing game elements in university teaching, students should be more motivated and deal with the teaching content more intensively. The knowledge imparted is to be prepared more attractively for the students and a greater bond to the respective module is to be built up. Game-typical elements can efficiently link the individual sub-processes of learning with each other and thus maximize a student's performance, knowledge level and motivation. Due to the Covid19 pandemic and the ever-advancing technology development, digital teaching and learning have become essential components of university teaching in the long run. Because quality management is a field that is closely related to practice, the focus is not only on teaching theoretical knowledge but also on practical relevance. The Chair of Quality Management offers the module Project Management every summer semester. The learning objective of the module is to enable students to plan projects and organize their implementation. The module Project Management consists of a lecture, a seminar, and a semester project. In the lecture, students are taught the basics of project management. In the seminar, students learn to select and apply project management methods for different problems. Practical exercises are supported by media and software demonstrations. In the semester project, students get together in groups and plan a project during the semester. The project is intended to help students practically implement the knowledge they have acquired in lectures and seminars. The topics are provided by the chair's corporate partners. To increase the realism of the projects, the handing out of an event card is linked to the interim deadlines. The event card implies an adjustment of already planned resources, activities and/or funds. To optimally adapt the gamification elements for the module, a target group analysis was first conducted as part of the research work. Based on the findings, an action plan was created on how the gamification approach could be transferred into the teaching concept of the module. After implementation, the module was examined further in the course of a teaching evaluation and a survey of the participating students. The main goal of the investigation was to find out to what extent game-typical elements promote the learning process and how practical projects support the learning process. On the one hand, the survey confirmed the promotion of motivation and the learning process by means of game-typical elements among the students. The results show that the creative and diverse way of conveying the learning material is accepted by the students. On the other hand, the study showed that too many of these elements can have a negative effect and a possible saturation effect occurs. Furthermore, the authenticity of the module or the chair may decrease. The results and knowledge from the research work flow into the adjustments of the module and are to be transferred to further modules of the chair in the future. KW - teamwork, virtual teams, new work, gamification Y1 - 2022 UR - https://library.iated.org/view/GOLDMANN2022APP SN - 978-84-09-45476-1 U6 - https://doi.org/10.21125/iceri.2022 SN - 2340-1095 SP - 3582 EP - 3590 PB - IATED Academy CY - Valencia, Spain ER - TY - GEN A1 - Goldmann, Christine A1 - Wolter, Anja A1 - Woll, Ralf T1 - Identifying the challenges of communication within virtual teamwork T2 - 15th International Conference of Education, Research and Innovation, November 7th-9th, 2022, ICERI Proceedings 2022 N2 - In recent years, employees have increasingly been working remotely. Thus, virtual collaboration has continuously gained in importance and the associated change in work organization is realized in virtually collaborating teams. In particular, the communication that takes place under these conditions differs significantly from traditional face-to-face communication and plays a central role in virtual team collaboration. The challenges and opportunities that arise in this context were investigated in this study. The study focuses on identifying the challenges employees face at the communication level in their everyday work. To this end, opinion interviews were conducted with employees of virtually collaborating teams. Based on the identified challenges, a survey was carried out to initiate the analysis based on (quantitative) data collection. After data cleaning, a sample of 291 participants could be collected. From the results obtained, potential improvements for communication, both for the management positions as well as the employees of virtually collaborating teams were derived. The research confirmed that the communication effort in virtual teamwork is higher than in real teamwork. Furthermore, virtual communication has a significant influence on the factors team identification, miscommunication and the decision-making processes in the team. Other findings of the study are that individuals who work only in face-to-face teams are more skeptical of virtual collaboration. In contrast, individuals who work exclusively virtually are more open to virtual and face-to-face collaboration. The results suggest there are more challenges when comparing virtual to face-to-face communication. In addition to the broader findings, it can be seen that the increasingly digitized world of work impacts communication and poses challenges for virtually collaborating teams. In addition to media competence, it is additionally important in this context that individual team members have team- and technology-related skills. In addition to these prerequisites, virtually collaborating team members should be prepared for and continuously supported in virtual collaboration and virtual communication through training, workshops and courses. This can be counteracted by increased communication, soliciting feedback, and face-to-face meetings. The research suggests that transparent and traceable communication and collaboration processes should be implemented in practice. KW - Virtual teamwork, collaboration, new work. Y1 - 2022 UR - https://library.iated.org/view/GOLDMANN2022IDE SN - 978-84-09-45476-1 U6 - https://doi.org/10.21125/iceri.2022.0881 SN - 2340-1095 SP - 3609 EP - 3615 PB - IATED Academy CY - Valencia, Spain ER - TY - GEN A1 - Fischer, Tim Sebastian A1 - Grüger, Lennart A1 - Woll, Ralf T1 - Additive Manufacturing: A Step-by-Step Guide T2 - Industry 4.0 Science N2 - New technologies have enabled additive manufacturing to construct components layer by layer using 3D model data. Machinery requirements for this are minimal, entailing only a welding device for energy input and a guiding machine to shape the component. Though there are clear benefits to the process, such as the cost-effective technology and high deposition rates, the complex interactions involved must receive due consideration. KW - process visualization KW - Additive Manufacturing KW - Wire Arc Additive Manufacturing KW - WAAM KW - Structured Analysis and Design Technique KW - SADT KW - welding KW - manufacturing KW - metal components KW - slicing KW - arc welding KW - deposition rate KW - machining centers KW - wire feed rate Y1 - 2023 U6 - https://doi.org/10.30844/I4SE.23.1.80 SN - 2942-6162 IS - 1 SP - 80 EP - 88 ER - TY - GEN A1 - Grüger, Lennart A1 - Fischer, Tim Sebastian A1 - Woll, Ralf A1 - Buhl, Johannes T1 - Safeguarding Against Risks in the Wire Arc Additive Manufacturing Process T2 - Industry 4.0 Science N2 - In this article, the potential risks in wire arc additive manufacturing are analyzed using failure mode and effects analysis. To achieve this, 186 possible causes of risk were analyzed and the five most critical risks were discussed in detail. Four significant risk factors were identified in the construction process. The fifth risk relates to the shielding gas flow. This is only one influencing factor among the welding parameters, which have strong interactions with each other. Therefore, their relationships should be analyzed on the basis of numerous tests. KW - additive manufacturing KW - wire arc additive manufacturing KW - failure mode and effects analysis Y1 - 2024 U6 - https://doi.org/10.30844/I4SE.24.1.63 SN - 2942-6170 VL - 2024 IS - 1 SP - 63 EP - 69 ER - TY - CHAP A1 - Grüger, Lennart A1 - Fischer, Tim Sebastian A1 - Woll, Ralf ED - Gapiński, Bartosz ED - Ciszak, Olaf Stanisław ED - Ivanov, Vitalii ED - Machado, Jose Mendes T1 - Investigation of the Wire Arc Direct Energy Deposition-Process and Possible Interactions T2 - Advances in Manufacturing IV N2 - The Wire Arc Direct Energy Deposition (WA-DED) process is highly regarded as part of additive manufacturing. Compared to other additive manufacturing processes, it is characterized above all by its high deposition rate and low system costs. Despite many years of experience in the build-up welding process, WA-DED still holds a number of challenges in terms of process stability. This article analyses the interactions in the WA-DED process. To this end, the process was visualized and described with the help of Structured Analysis and Design Technique (SADT). Building on this, a process Failure Mode and Effects Analysis (FMEA) was presented to identify and priorities risks. Finally, the results of the Taguchi tests were analyzed and visualized. The results illustrate the strong interactions between the influencing factors. These have a material-specific effect on the production results. Each new material composition therefore requires a systematic analysis in order to determine quantitative correlations. In future, these can be supported by machine learning approaches. KW - Additive Manufacturing KW - Structured Analysis and Design Technique KW - Failure Mode and Effects Analysis KW - Design of Experiments Y1 - 2024 SN - 9783031564659 U6 - https://doi.org/10.1007/978-3-031-56463-5_14 SN - 2195-4356 VL - 2024 SP - 176 EP - 194 PB - Springer Nature Switzerland CY - Cham ET - 4 ER - TY - RPRT A1 - Grüger, Lennart A1 - Sydow, Benjamin A1 - Woll, Ralf A1 - Buhl, Johannes T1 - Design of a Cost-Effective and Statistically Validated Test Specification with Selected Machine Elements to Evaluate the Influence of the Manufacturing Process with a Focus on Additive Manufacturing N2 - Due to their versatile advantages, the use of additively manufactured components is growing. In addition, new additive manufacturing processes are constantly being developed, so that a wide range of printing processes are now available for metal. Despite the same starting material, the microstructure and thus also the final mechanical properties differ greatly compared to conventional processes. In most cases, only direction-dependent characteristic values from the uniaxial tension are used to qualify a printing process before it is used. The literature, on the other hand, demonstrates that the results are not transferable to other loading conditions. In this work, several engineering tests were integrated into a single test specimen so that they can be determined on the same specimen. The test specimen can be used to test tooth root strength, bending strength, notched bar impact energy, and thread strength depending on the mounting direction, thus representing industrial loading cases. In this study, test specimens were fabricated by conventional manufacturing (machining), L-PBF (Laser Powder Bed Fusion), and WA-DED (Wire Arc Direct Energy Deposition), and the results were compared using statistical methods. Factors to capture manufacturing influence and buildup direction were statistically validated on 316L. The work shows a benchmark with a typical initial microstructure of rolled and milled material, L-PBF, and WA-DED parts on loads close to the application and thus simplifies an industry-oriented evaluation of a new manufacturing process. KW - manufacturing factor KW - testing specification KW - laser powder bed fusion KW - wire arc direct energy deposition KW - 316L KW - significance KW - statistical method KW - benchmark geometry Y1 - 2023 UR - https://www.mdpi.com/2075-4701/13/11/1900 U6 - https://doi.org/https://doi.org/10.3390/met13111900 ER -