Surface Roughness Evaluation of Textile Fabrics: A Literature Review

2014 ◽  
Vol 9 (2) ◽  
pp. 155892501400900 ◽  
Author(s):  
Sara Asghari Mooneghi ◽  
Siamak Saharkhiz ◽  
S. Mohammad Hosseini Varkiani

Surface roughness is an important and effective factor in predicting tactile properties of fabrics. The definition of surface roughness and its different evaluating methods are divided into two main groups, subjective and objective, are reviewed. The latter consists of contact and non-contact methods. The evaluation in subjective and objective techniques is done by trained people as a measuring device and an apparatus, respectively.

2021 ◽  
pp. 088541222199424
Author(s):  
Mauro Francini ◽  
Lucia Chieffallo ◽  
Annunziata Palermo ◽  
Maria Francesca Viapiana

This work aims to reorganize theoretical and empirical research on smart mobility through the systematic literature review approach. The research goal is to reach an extended and shared definition of smart mobility using the cluster analysis. The article provides a summary of the state of the art that can have broader impacts in determining new angles for approaching research. In particular, the results will be a reference for future quantitative developments for the authors who are working on the construction of a territorial measurement model of the smartness degree, helping them in identifying performance indicators consistent with the definition proposed.


2021 ◽  
Vol 1 ◽  
pp. 2841-2850
Author(s):  
Didunoluwa Obilanade ◽  
Christo Dordlofva ◽  
Peter Törlind

AbstractOne often-cited benefit of using metal additive manufacturing (AM) is the possibility to design and produce complex geometries that suit the required function and performance of end-use parts. In this context, laser powder bed fusion (LPBF) is one suitable AM process. Due to accessibility issues and cost-reduction potentials, such ‘complex’ LPBF parts should utilise net-shape manufacturing with minimal use of post-process machining. The inherent surface roughness of LPBF could, however, impede part performance, especially from a structural perspective and in particular regarding fatigue. Engineers must therefore understand the influence of surface roughness on part performance and how to consider it during design. This paper presents a systematic literature review of research related to LPBF surface roughness. In general, research focuses on the relationship between surface roughness and LPBF build parameters, material properties, or post-processing. Research on design support on how to consider surface roughness during design for AM is however scarce. Future research on such supports is therefore important given the effects of surface roughness highlighted in other research fields.


2013 ◽  
Vol 465-466 ◽  
pp. 764-768 ◽  
Author(s):  
Tanel Aruväli ◽  
Tauno Otto

The paper investigates in-process signal usage in turning for indirect surface roughness measurement. Based on theoretical surface roughness value and in-process signal, a model is proposed for surface roughness evaluation. Time surface roughness and in-process signal surface roughness correlation based analysis is performed to characterize tool wear component behavior among others. Influencing parameters are grouped based on their behavior in time. Moreover, Digital Object Memory based solution and algorithm is proposed to automate indirect surface roughness measurement process.


2013 ◽  
Vol 856 ◽  
pp. 92-97 ◽  
Author(s):  
Shigeyuki Haruyama ◽  
Didik Nurhadiyanto ◽  
Ken Kaminishi

Contact width is important design parameter for optimizing design of new metal gasket. The contact width was found have relationship with helium leak quantity. Increasing axial force, the contact width will increase and helium leakage will decrease. This study we conducted the surface roughness evaluation of 25A-size metal gasket before and after use. The results denote the real contact width after contact with flange having different surface roughness. The real contact width for the flange having smoother surface roughness is wider than the rougher one.


2021 ◽  
Author(s):  
Alfredo Sánchez-Tójar ◽  
Maria Moiron ◽  
Petri Toivo Niemelä

Whether animal personality studies provide insights of broader evolutionary and ecological relevance to behavioural ecology is frequently questioned. One source of controversy is the vast, but often vague conceptual terminology used. From a statistical perspective, animal personality is defined as repeatable among-individual variance in behaviour; however, numerous conceptual definitions of animal personality exist. Here, we performed a 1) self-report questionnaire and 2) systematic literature review to quantify how researchers interpret conceptual and statistical definitions commonly used in animal personality research. We also investigated whether results from the questionnaire agree with those of the literature review. Among the 430 self-reported researchers that participated in our questionnaire, we observed discrepancies in key questions such as the conceptual definition of animal personality or the interpretation of repeatability. Our literature review generally confirmed the global patterns revealed by the questionnaire. Overall, we identified common disagreements in animal personality research and discussed potential solutions. We advocate for the usage of statistically-oriented terminology because conceptual definitions can seemingly be interpreted at multiple levels of biological organization. We expect that adopting such statistically-oriented terminology will, at least partly, avoid the confusion generated by the label “animal personality”, and ultimately help to clarify and move the field forward.


Author(s):  
Jean-Marc Fontan

RÉSUMÉL’article présente les résultats d’une recherche portant sur les notions d’entrepreneur social et d’entrepreneur collectif. Après avoir défini le concept d’entrepreneur, nous voyons comment les qualitatifs « social » et « collectif » transforment l’idée d’entreprendre en un projet plus intégré où les objectifs sociaux, politiques et économiques sont « harmonieusement » agencés. La recherche repose essentiellement sur la réalisation d’une revue de littérature de textes clés produits en langue française et anglaise en Amérique du Nord et en Europe. L’analyse des données recueillies nous permet de présenter des critères simples pour proposer une définition de ces notions qui devrait rendre compte de la réalité des pratiques rencontrées sur le terrain et des contributions théoriques et critiques faites par les auteurs et travaux consultés. Elle permet aussi de présenter une dizaine de constats qui illustrent tant les points de convergence que les divergences observées entre les types d’entreprenariat étudiés.ABSTRACTThis article presents the results of a study bearing on the notions of social entrepreneur and collectiveentrepreneur. After defining the concept of entrepreneur, I look at how the adjectives “social” and “collective” transform the project of being an entrepreneur into a more integrated one where the social, political and economic objectives are “harmoniously” organized. The study is essentially based on a literature review of key English- and French-language texts written in North America and in Europe. The analysis of the collected data allows me to present simple criteria for proposing a definition of these notions that should take into account both the reality of the practices encountered in the field and the theoretical and critical contributions made by the authors and the texts that I consulted. It also enables me to present ten observations that illustrate both the points of convergence and divergence between the types of entrepreneurship that I studied.


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