Matthias Reiser, Patrick Beau, Gregor Patzer and Matthias Niessner
Environmentally friendly products are finding a place in everyday lives more frequently, like bamboo toothbrushes. However, the authors find no statement from consumer protection…
Abstract
Purpose
Environmentally friendly products are finding a place in everyday lives more frequently, like bamboo toothbrushes. However, the authors find no statement from consumer protection centers about their impact on the human well-being or dental health in daily use. Therefore, this study aims to investigate the tribological parameters between tooth, toothpaste and toothbrush laboratory tests with a focus on abrasive wear.
Design/methodology/approach
The real-world system was systematically transferred to a laboratory scale, which was implemented to a Schwing-Reib-Verschleiß tribometer tribometer (Optimol Instruments). For an abstraction of the real-world system, as many components of the original tribosystem as possible were retained. In addition, the abstraction was selected so that the method could be transferred to other tribometers. For the evaluation of the test subjects, an optical measurement method was developed to investigate the forms of wear.
Findings
Based on eight test series, it is possible to differentiate between the tribological partners by the wear results. With the help of the measurement method, it will be possible to recommend the use of sustainable oral hygiene products for everyone in everyday life in future. According to the findings, the use of low-cost toothbrushes and highly abrasive toothpaste should be avoided. The effects of an aggressive brushing technique cannot be compensated by gentle toothbrushes and toothpastes.
Originality/value
To the best of the authors’ knowledge, this is the first approach to investigate the wear behavior of tooth–toothpaste–toothbrush while substitute the tooth with dental gypsum. The approach is relevant for developing screening tests with high respect to transferability to the real-world application.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-11-2022-0339/
Details
Keywords
Marlene Kristin Ziegler, Benedict Rothammer, Marcel Bartz, Sandro Wartzack, Patrick Beau, Gregor Patzer, Stephan Henzler and Max Marian
The evaluation of the haptics of water taps and wear-related changes during usage usually involves time- and cost-intensive testing. The purpose of this paper is to abstract the…
Abstract
Purpose
The evaluation of the haptics of water taps and wear-related changes during usage usually involves time- and cost-intensive testing. The purpose of this paper is to abstract the tribo-system between technical ceramic disks of water tap mixer cartridges to the model level and study the tribological behavior.
Design/methodology/approach
The friction and wear behavior was studied by means of an alumina ball-on-original alumina disk setup at different temperatures as well as under dry conditions and under lubrication by different greases. Thereby, the frictional behavior was measured in situ, and the wear losses were analyzed by means of laser scanning microscopy.
Findings
It was shown that friction and wear can behave in a contrasting way, whereby one grease might lead to low friction, that is, an easy-going movability of the water tap, but to increased wear losses. The latter, in turn, is an indicator for the usability and service life, which cannot be explained from friction alone. Thereby, the viscosity of the base oil, the grease consistency and additives were identified as relevant grease formulation parameters to allow for fluid film (re-)formation and removal of wear particles.
Originality/value
To the authors’ best knowledge, this is the first approach to systematically analyze the friction and wear behavior of technical ceramic disks of water tap mixer cartridges in dependency on the temperature as well as the used lubricating grease. This approach is relevant for developing screening test strategies as well as for the selection of lubricants for water tap applications.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-11-2022-0334/
Endang Ruswanti, Nia Puspita Hapsari and Moehammad Unggul Januarko
Retail or entrepreneurial shops support economic growth, conducting studies in this area is needed. Our study examines whether the buyers have moral intensity, religious beliefs…
Abstract
Retail or entrepreneurial shops support economic growth, conducting studies in this area is needed. Our study examines whether the buyers have moral intensity, religious beliefs, and self-concept affect purchase ethics. Using quantitative analysis, we employ 150 respondents, consisting of 94 women and 56 men; the analysis tool used is the structure equation modeling model. The results showed that moral intensity influences religiosity. Moral intensity does not affect self-concept, but religiosity stimulates self-concept, and self-concept impacts purchasing ethics. The limitations of this study have not tested the ethical attitudes of retailers, and respondents are very limited.