Skin quality sensor to evaluate vibration and friction generated when sliding over skins / Naoki Saito in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 6 (12/2023)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° 6 (12/2023) . - p. 851-861 Titre : Skin quality sensor to evaluate vibration and friction generated when sliding over skins Type de document : texte imprimé Auteurs : Naoki Saito, Auteur ; Kohei Matsumori, Auteur ; Taiki Kazama, Auteur ; Saito Sakaguchi, Auteur ; Ryuta Okazaki, Auteur ; Naomi Arakawa, Auteur ; Shogo Okamoto, Auteur Année de publication : 2023 Article en page(s) : p. 851-861 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse sensorielle Frottements (mécanique) Mesure Peau -- Anatomie Peau -- Physiologie Toucher Vibrations (mécanique) Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : The mechanical condition and tactile evaluation of skin are essential for the development of skin care products. Most of the existing commercial instruments and studies aim to evaluate the skin surface by pressing it for hardness or by using imaging sensors, but there have been few instrumental measurements employing rubbing motion. Here, we have developed a sensor specialized for tactile sensation and the contact phenomenon during skin rubbing. - Methods : The developed sensor has three features: It can measure body parts including cheeks and arms, automate the rubbing motion of the probe and measure vibration and friction simultaneously. It is hand-held, with metal probes that rub the skin surface while rotating under a motor drive; it has an accelerometer and a force sensor beneath the probe measuring vibration and friction forces. To evaluate the validity of the sensor's measurements, artificial skin models were measured using the developed sensor and commercially available sensors and the results were compared. The relationship between the sensor output, surface roughness measurement and sensory evaluation was also investigated. Additionally, we evaluated the inter-rater reliability when measuring actual skin. - Results : The measurements of five artificial skin models with different surface shapes showed a high correlation (r = 0.99) between the vibration intensity values evaluated by the developed sensor and those measured by a tri-axial acceleration sensor attached to a fingernail. The correlation coefficient between the vibration intensity values and surface roughness was r = 0.91, and the correlation with the sensory evaluation score of roughness was r = 0.99. The friction coefficients measured by the developed sensor and the force plate had r = 0.93, based on measurements of five artificial skin models with different friction conditions. The inter-rater correlation coefficients between the three participants of the developed sensor were as high as 0.92 and 0.94 for the vibration and friction measurements respectively. - Conclusion : The vibration intensities and friction coefficients from the sensor were highly correlated with those of the conventional sensor. The inter-rater reliability was also high. The developed sensor can be useful for tactile evaluation in skin-care product development. Note de contenu : - METHODS : Development of a tactile sensor - Artificial skin model - Friction and vibration measurement using the developed tactile sensor - Friction measurement using the force plate and vibration measurement using the accelerometer attached to finger - Surface roughness measurement of the artificial skin model - Sensory evaluation of the artificial skin model - Friction measurement using artificial skins and skin-care products - Evaluation of intra- and inter-rater reliability - Data analysis - RESULTS : Performance evaluation using artificial skin models - Friction measurement using artificial skins and skin-care products - Evaluation of intra- and inter-rater reliability - Table 1 : Intra-rater reliability ICC (1,1) and inter-rater reliability ICC DOI : https://doi.org/10.1111/ics.12892 En ligne : https://drive.google.com/file/d/1AIXVni-i1KQJzT8CFc3lFjkJDuoIaRfL/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40269 [article]

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