Jean-Bernard Bluntzer’s research while affiliated with University of Technology of Belfort-Montbéliard and other places

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Publications (56)


Smart Ergo-Design: Innovating Sustainability through Smart Ergonomics and Design
  • Research Proposal
  • File available

November 2024

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56 Reads

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Jean-Bernard Bluntzer

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Morad Mahdjoub

Smart ergo-design represents an emergent holistic approach to addressing these challenges. It embodies the integration of ergonomic principles, innovative design methodologies, and intelligent technologies to create products, systems, and services that are not only efficient and human-centered but also sustainable. By placing humans at the center of the product, system, and service lifecycle, smart ergo-design seeks to optimize the use of resources, materials, and energy and improve overall sustainability outcomes by employing human-centered design methodologies, promoting transdisciplinary collaboration, and utilizing data-driven decision-making. This Special Issue explores the multifaceted implications of smart ergo-design for sustainability across various domains, including but not limited to product design, mobility, transportation, and urban planning. Utilizing insights from ergonomics, industrial design, engineering, and environmental science, the research examines the theoretical foundations, practical applications, and emerging trends in smart ergo-design. an Open Access Journal by MDPI Smart Ergo-Design: Innovating Sustainability through Smart Ergonomics and Design 5.8 3.9

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Figure 1. CAD model definition: Design approaches In our approach, we are looking at existing methods and rules developed to support product designers to fulfil their requirements regarding a large number of different aspects, often addressed in the literature as design for X (DfX) (Gupta et al., 1997) (Lindemann, 2007). The manufacturing seems to be already taken into account as Design for Manufacturing -DfM. For example, other fields are using this approach, such as design for comfort (da Silva et al., 2012), ergonomics (Sang et al., 2013), acoustics and vibration reduction (Mohanty and Fatima, 2013), aesthetics (Bluntzer et al., 2014; Ranscombe et al., 2012), emotions (Herbeth and Blumenthal, 2013), and materials (Bluntzer et al., 2016). When we focus on DfM, the main objectives of such approaches is to reduce the development time from the concept of the product to the manufacturable part, through a continuous improvement of the product and process. Therefore, a lot of method are developed in order to answer a specific kind of manufacturing process. For example, we can cite the additive manufacturing (Asadollahi-Yazdi et al., 2017), the machining processes (Aman et al., 2022), composite materials (Stojkovic and Butt, 2022) including defect prediction (Noevere et al., n.d.), plastic materials (Jha and Kumar, 2022) or assembly process (Bakhshi et al., 2022). We can also cite some works which exposes methodologies designing hybrid modular products. For exemple, (Kerbrat et al., 2011) see the product as 3D puzzles with modules., combining machining process and additive manufacturing. However, the integration of specific CAD methodologies to support the DfM approach by confronting directly several manufacturing processin the early stages of the product design process has not beenproposed.
Figure 2. Manufacturing view design process
Figure 3. Multi-view CAD parts process
Figure 6. Fuzzy CAD part integrating functional parameters and surfaces
Definitions of the retained surfaces
A METHOD FOR REDUCING FUZZINESS AND ACCELERATING NEW PRODUCT MODELLING IN CAD: THE CASE OF DESIGN FOR MANUFACTURING

June 2023

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89 Reads

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1 Citation

Proceedings of the Design Society

Improvements in product development can increase the competitiveness of firms. However, new product development in CAD systems involves difficulties and uncertainties that increase along with the pressure to develop the products. A distinct characteristic of CAD modeling for new product development is its uncertainty. This is because the information is usually approximate and incomplete during CAD modeling. Thus, the main objective of this paper is to propose a robust and flexible CAD approach to reduce uncertainty and accelerate new product modeling in the context of design for manufacturing. This methodology permits the convergence towards different product forms depending on the selected manufacturing process. Application of this approach has shown that when uncertainty is high, approving a complete CAD modeling results in a delay in product development. In contrast, CAD modeling using fuzzy models results in a gain of valuable development time because the model is completed when knowledge about manufacturing technologies, company fit and capabilities, and markets is available.


Proposal of a Conceptual Framework for Collaborative Design of Immersive Professional Training: Application to the Textile Industry

May 2022

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244 Reads

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1 Citation

Proceedings of the Design Society

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[...]

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F. Ravier

Immersive technologies have an increasing use in professional training. However, the usability of applications has limits due to a lack of consideration of end users in the design of these new supports. This paper reviews the literature and discovers that few approaches offer to include different collaborators' work, or the end user, in the design process. This study proposes a conceptual framework design for immersive professional training (IPT) and its application in the textile industry.


DESIGN BY MATERIAL: FROM MATERIAL TO FORM THROUGH CAD MODELLING

August 2021

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211 Reads

Proceedings of the Design Society

For Aristotelian scholars, matter is identified as the subject of change, while form is the boundary of matter. Design is a process of bringing about change. From a design perspective, material is what an entity is made from; form is what makes a thing what it is. Based on the principle, “form is the boundary of matter”, this paper proposes a Design by Material method, thereby addressing the knowledge gap of a systematic method for designing according to material. This method is predicated on the material specification as the first input in the design process. A formal model is built in which the material acts as a trigger and driver for the design process. The method is implemented by integrating computer-aided design (CAD) modelling and its design form. A design application is explained to demonstrate the relevance of the Design by Material method.


Placing Students in an Operational Learning Situation as “Human Factors and Ergonomics Engineering” in a Vehicle Design Project

May 2021

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25 Reads

This study aimed to place the students in an operational situation as Human Factor and Ergonomics (HFE) engineers within a vehicle architecture project and propose them as learning objectives using the different ergonomics tools to evaluate the occupant packaging of a vehicle. A Computer-Aided Design (CAD) application has been proposed, enabling the users to generate a 3D digital model, called digital mockup, of a car without in-depth knowledge in the use of CAD software. The students’ groups used the CAD application and reproduced a digital mockup after measuring the different dimensions in a real car. This quickly generated car model allows them to evaluate occupant packaging elements, such as posture, reach-capability, and visibility by ergonomics tools. Most users of the CAD application were satisfied and believed that it saved their time significantly. However, the CAD application needs to improve in several aspects to better responds to the vehicle interior design needs.


CONFERE'21/N° CADRE CONCEPTUEL APPLIQUE A LA CONCEPTION DE FORMATION PROFESSIONNELLE IMMERSIVE

January 2021

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5 Reads

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1 Citation

Aujourd'hui, dans le contexte de l'industrie 4.0, de plus en plus d'industriels ont passé le pas des technologies immersives (TI). Ces technologies innovantes sont utilisées notamment dans le cadre de la formation professionnelle pour améliorer l'apprentissage des opérateurs mais aussi pour la prévention des maladies professionnelles. De nombreux travaux académiques et industriels proposent aujourd'hui des mises en oeuvre méthodologiques et opérationnelles de ces outils. Cependant, il apparait encore un manque de prise en compte des utilisateurs dans la conception de ces nouveaux supports de formation basés sur les TI. Ainsi, l'objectif de cet article est de proposer un cadre conceptuel pour la conception de formations professionnelles immersives centrée sur les utilisateurs. Pour cela, un état de l'art présente les propositions de méthodes de conception de ce type d'applications et qui en même temps s'intéressent aux besoins et attentes des utilisateurs. Ensuite, une première proposition de cadre conceptuel est faite à partir de notre synthèse bibliographique. Elle détaille la contribution des différents acteurs intervenant dans le processus de conception d'une formation immersive et une manière de concevoir pour les utilisateurs. Enfin, des futurs travaux sont évoqués pour une première mise à l'épreuve de ce modèle dans le cadre d'un projet de formation immersive pour l'entreprise Stäubli qui accompagne ces travaux dans le cadre d'une thèse CIFRE débutée en septembre 2020.


A CAD Material Skeleton-Based Approach for Sustainable Design

July 2020

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357 Reads

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3 Citations

In recent years, the development and application of sustainable product design have become a hot spot. With the development of computer technology as the core of the comprehensive technology, product management information system should integrate the sustainable material specifications early in process design. This paper proposes a conceptual model based on the concept of CAD skeleton where the material and function of the constituent elements are highly integrated to achieve sustainable products. A skeleton contains formally the following information: engineering requirements, performance requirements, materials and morphology. This information is defined by defined firstly by attachment, which relates to the immediate proximity of the importing and exporting of design loads; secondly by the functional structure which defines the simplified morphology to channel the loads and thirdly the envelope, which defines where the morphology of the part can be without interfering with others. Using the proposed formalism, the morphology of the product (geometry and topology) is formally driven by material requirements. Therefore, this approach allows the designer to design different product forms according to the material requirements of clients. An application shows the interest of the approach.


Emotional Design: Discovering Emotions Across Cars’ Morphologies

February 2020

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168 Reads

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1 Citation

The primary focus behind the overall design involves shifting from a designer-centric concept to a user-centric one. In essence, cars are utilitarian from an engineering point of view and symbolic-emotional from a social point of view. The modern car retains a strong social position and also generates vivid emotions. The tellability of a car is the priority when communicating with a customer. As a result, this paper proposes a computational approach towards studying the relationship between car morphology and the aforementioned produced emotions. Emotions are considered self-measurable and physiologically distinct. Each car is thus self-evaluated emotionally by a panel of potential users. The results of this study allege that cars can be differentiated in terms of emotions. The computing results show that a dominant trend in car style reflects the production of a group of emotions that we called power. These emotions are classified as (a) dynamism, (b) aggressivity, and (c) powerfulness, and are associated with those of (d) elegance and (e) modernity. Two groups of cars mostly correspond to a single emotion: friendly or stable. Finally, a group of cars is characterized by neutrality. It is also important for the designer to be able to foresee changes in style; and if possible, a designer must be able to explain them while considering the emotions produced in time and within context. A possible explanation is that the relationship between a car’s style and its environment tends to be orchestrated and designed as a team. A car’s style can be influenced by both the physical and social environment, and, in turn, impact these environments.


Figure 3. Car's recognition : "Good"
Characteristics and corresponding values of data
Completeness and discrimination for selected cars
From the Car Style Pregnancy towards the Brand Country Origin Recognition

July 2019

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127 Reads

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1 Citation

Proceedings of the Design Society International Conference on Engineering Design

In the modern automotive industry, a car's style clearly defines its brand. In the context of globalization, a question has recently emerged concerning the relationship between a country's culture and the car style of a particular brand. The style is one way to place car morphologies into a meaningful structure, called the “telling structure.” This research hypothesizes that a stylist tries to compress a car's form and make it a refined unicum that is streamlined with some inherent features, which express a brand's cultural aesthetics. Using the cognitive paradigm that an end user transforms explicit references into implic-it references and that the telling structure of a car's design features influences the recognition of the brand, this research demonstrates a novel method to ad-dress this hypothesis. Results from this study show that there is a relationship between the brand's country of origin and the perceived recognition of a car. However, a country's brand culture is not always represented by the style of the cars. In particular, the results indicate that some cars can actually lose their cultural identity, especially in the context of a worldwide market.


Figure 1. Flowchart for the definition of Use performance 3.2 Calculating the use design performance indicator (UDPI) Figure 2 illustrates the steps involved in calculating the Use design performance indicator. The calculation is explained in the following sections. The calculation step is illustrated with a project realised by French students in mechanical and ergonomics engineering. The project involves the design of a smartphone projector scheduled to be made by the user with 3D printing technology. In order to calculate our approach, we used Visual Basic applied to Microsoft Excel, because it enables access to a large panel of users and can be tested at minimum cost.
Use Design Performance Based on Use Requirements

July 2019

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117 Reads

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1 Citation

Proceedings of the Design Society International Conference on Engineering Design

Industrial companies today must operate in an increasingly competitive world and need to rethink their organization accordingly. First, industrial strategies concerning technical management need to change and develop. If we consider the specific management of the product design process, managers use indicators during the lifecycle of the product concerning quality, cost and lead-times. For example, some new indicators concerning performance metrics related to cooperation issues among the design team are set up. Secondly, managers increasingly need to integrate the user in the early phases of the design process. The main benefit of this approach is that it allows designers to innovate more rapidly and robustly. The aim of this paper is to introduce a new approach making it possible to calculate a performance indicator concerning use design. The new indicator will help management drive the design process through the integration of use in the product, helping to enhance the usability of the future product, and consequently improve innovation.


Citations (34)


... The IPT was designed using a user-centred design process (Bisson et al., 2021). After an initial analysis of the needs of the sponsors of this training, we decided to spend only part of the training in virtual reality (VR) to avoid lengthy exercises. ...

Reference:

Development, Deployment and Evaluation of Augmented Reality Maintenance Support Applications.
CONFERE'21/N° CADRE CONCEPTUEL APPLIQUE A LA CONCEPTION DE FORMATION PROFESSIONNELLE IMMERSIVE
  • Citing Article
  • January 2021

... It is difficult to forecast future use of such technologies especially for training activities. However, scenario definition is a crucial step for the design success of such applications (Bisson et al., 2022). This paper deals with the problematic of improving scenario definition of IPT applications during the early design phases. ...

Proposal of a Conceptual Framework for Collaborative Design of Immersive Professional Training: Application to the Textile Industry

Proceedings of the Design Society

... Also, the fuzzy CAD part is considered as a CAD skeleton, which is built with specific constraints (Svensson et al., 2002). Many studies have already been carried out in skeleton-based modeling (Bley and Bossmann, 2006;Cluzel et al., 2012;Cornea et al., 2005;Lee et al., 2013;Ma and Choi, 2014;Ostrosi et al., 2020). Like the human body, where the skeleton holds muscles, a CAD skeleton holds the morphology, which is the topology-geometry (TG) of the future product. ...

A CAD Material Skeleton-Based Approach for Sustainable Design

... This again matches Crilly's stereotype category of visual references. Bluntzer and Ostrosi (2019) were interested in how people perceive the place of origin of car brands and studied this among university students in Europe. They created a questionnaire and stripped all brand information from the car images, as well as developed two functions to describe completeness (the consumer's degree of recognition for a car's country of origin) and discrimination (the consumer's degree of inability to recognize all other countries). ...

From the Car Style Pregnancy towards the Brand Country Origin Recognition

Proceedings of the Design Society International Conference on Engineering Design

... To determine a product's style, a person must first be able to comprehend visual elements, and then their brain must translate that content into abstract aesthetic concepts. Ostrosi et al. [14] proposed a computational method for multi-scale sedan style semantic identification using the style unit concept. Firstly, variable precision rough sets are applied to sedan evaluation; secondly, feature lines of different sedans are extracted from the model. ...

Car style-holon recognition in computer-aided design
  • Citing Article
  • October 2018

Journal of Computational Design and Engineering

... Fleche et al. use quantitative and non-intrusive indicators during the management of collaborative design phases. They compute several indicators linked to the completeness of the CAD data in order to assess the performance of a collaborative design project (Fleche et al., 2017). Fleche makes the hypothesis that the completeness rate of the project can be measured by taking into account the modification rate of CAD data between two revisions. ...

Collaborative project: Evolution of computer-aided design data completeness as management information
  • Citing Article
  • March 2017

Concurrent Engineering Research and Applications

... As early as the beginning of computer music software teaching in China, many similar softwares have been designed in western countries, and they have been tested in the market for a long time-such as Listen Ear Power Practica Musica and Civilian Music Coach [4][5]. AuraliaSampler and EarMasterPro/School are two widely used and popular softwares. ...

Design for Materials: A New Integrated Approach in Computer Aided Design

Procedia CIRP

... Globalization of the economy has brought about the tendency in the market to reduce the product cost, decrease time of process and production, increase the product performance and pursue user satisfaction (Bluntzer et al. 2009). Many product developers are under pressure and facing difficulties when developing new products. ...

From Customer Needs to Design Parameters: Description of a Knowledge based and Functional CAD Model
  • Citing Conference Paper
  • March 2009