title: Study of the tactile perception of bathroom tissues: Comparison between the sensory evaluation by a handfeel panel and a tribo-acoustic artificial finger.
abstract: Tactile perception is one of the sensorial modes most stimulated by our daily environment. In particular, perceived softness is an important parameter for judging the sensory quality of surfaces and fabrics. Unfortunately, its assessment greatly depends on the tactile sense of each person, which in turn depends on many factors. Currently, the predominant method for evaluating the tactile perception of fabrics is the human handfeel panel. This qualitative approach does not permit the quantitative measure of touch feel perception. In this study, we present a new artificial finger device to investigate the tactile sensing of ten bathroom tissues. It enables simultaneously measuring the friction and vibrations caused when sliding an artificial finger on the surface of the tissue. The comparison between the results obtained with the artificial finger and the tactile perception evaluated using a handfeel panel showed that the artificial finger is able to separate the two parts of the tactile perception of bathroom tissues: softness and surface texture (velvetiness). The statistical analysis suggests that there is a good correlation between the vibrations measured with the artificial finger and the softness evaluated by the panel. It then shows that the friction measured by the artificial finger is related to the surface texture of a bathroom tissue. The ability of the artificial finger to mimic human touch is demonstrated. Finally, a Principal Component Analysis orders the signatures of the tactile perception of the bathroom tissues in four different groups.
authors.affiliation: Laboratoire de Tribologie et Dynamique des Systèmes, UMR-CNRS 5513, Ecole Centrale de Lyon, 36 avenue Guy de Collongue, Ecully, France. Electronic address: coralie.thieulin@doctorant.ec-lyon.fr.
authors.forename: C
authors.initials: C
authors.lastname: Thieulin
authors.affiliation: Laboratoire de Tribologie et Dynamique des Systèmes, UMR-CNRS 5513, Ecole Centrale de Lyon, 36 avenue Guy de Collongue, Ecully, France; Université de Lyon, Faculté de Pharmacie-ISPB, laboratoire de biophysique, Lyon, France. Electronic address: cyril.pailler-mattei@ec-lyon.fr.
authors.forename: C
authors.initials: C
authors.lastname: Pailler-Mattei
authors.affiliation: Laboratoire de Tribologie et Dynamique des Systèmes, UMR-CNRS 5513, Ecole Centrale de Lyon, 36 avenue Guy de Collongue, Ecully, France.
authors.forename: R
authors.initials: R
authors.lastname: Vargiolu
authors.affiliation: Université de Lyon, Faculté de Pharmacie-ISPB, laboratoire de biophysique, Lyon, France; Université Claude Bernard Lyon 1, INSERM, CNRS, Lyon Neuroscience Research Center, Lyon, France; Hospices Civils de Lyon, France.
authors.forename: S
authors.initials: S
authors.lastname: Lancelot
authors.affiliation: Laboratoire de Tribologie et Dynamique des Systèmes, UMR-CNRS 5513, Ecole Centrale de Lyon, 36 avenue Guy de Collongue, Ecully, France.
authors.forename: H
authors.initials: H
authors.lastname: Zahouani
mesh_terms: D000162:Acoustics; D000328:Adult; D032701:Biomimetics; D005260:Female; D005385:Fingers / Q000502:physiology*; D017276:Friction; D006801:Humans; D008297:Male; D008875:Middle Aged; D010209:Paper; D025341:Principal Component Analysis; D014038:Toilet Facilities; D055698:Touch Perception
keywords: Acoustic vibrations; Artificial finger; Friction; Surface tissue; Tactile perception