Experimental study of pin surface precision on lubrication behavior of pin–bush pairs in industrial roller chains

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ansheng Zhang ◽  
Mingyu Zhang ◽  
Jing Wang ◽  
Jianjun Zhang ◽  
Zhaohua Shang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Design Methodology ◽  
Industrial Applications ◽  
Experimental Basis ◽  
Reciprocating Motion ◽  
Content Type ◽  
Oil Supply ◽  
Machining Errors ◽  
Surface Precision ◽  
Straightness Error

Purpose The purpose of this paper is to study the influence of surface precision on the lubrication state of the roller chain under adequate and rare oil supply conditions, respectively. Design/methodology/approach The straightness error and roughness error of the pin generatrices were measured and the influence of surface precision on the lubrication behavior under steady state and reciprocating motion was studied through optical interference experiments. Findings The lubrication state is strongly influenced by the surface precision of the roller surface both under adequate oil supply and rare oil supply conditions. Originality/value In industrial applications, the machining errors of parts cannot be completely eliminated. Studying the influence of the surface precision on the lubrication behavior of pin–bush pairs can provide the experimental basis for the optimal design of the bush roller chains.

Improving wear resistance of aluminum by hydrophobic sol-gel-derived TiO2 film

2018 ◽  
Vol 70 (8) ◽  
pp. 1408-1413 ◽  
Author(s):  
Hongjin Zhao ◽  
Lei Cao ◽  
Yong Wan ◽  
Shuyan Yang ◽  
Jianguo Gao ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Stearic Acid ◽  
Design Methodology ◽  
Friction And Wear ◽  
Sol Gel ◽  
Industrial Applications ◽  
Content Type ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Increase Wear Resistance

Purpose The purpose of this paper is to increase wear resistance of aluminum. Design/methodology/approach The authors have studied the ways to improve the tribological performance of aluminum by assembling stearic acid on aluminum coated by sol-gel-derived TiO2 film. The samples were characterized by infrared spectroscopy, contact angle measurements and a macro friction and wear tester. Findings Enhanced wear resistance was clearly obtained after functionalization of TiO2 film on aluminum by stearic acid. Originality/value The relevant results might be helpful for guiding the surface modification of aluminum devices in industrial applications.

Experimental study on the friction stability of paper-based clutches concerning groove patterns

2019 ◽  
Vol 72 (4) ◽  
pp. 541-548 ◽  
Author(s):  
Liang Yu ◽  
Biao Ma ◽  
Man Chen ◽  
He Yan Li ◽  
Jikai Liu
Keyword(s):  
Experimental Study ◽  
Surface Temperature ◽  
Design Methodology ◽  
Automatic Transmission ◽  
Applied Pressure ◽  
Friction Torque ◽  
Content Type ◽  
Rotating Speed ◽  
Wet Clutch ◽  
Transmission Fluid

Purpose This paper aims to study and compare the friction stability of wet paper-based clutches with regard to the radial grooves (RG) and waffle grooves (WG). Design/methodology/approach This paper presents an experimental study of a wet clutch concerning the effect of groove patterns on the friction torque and surface temperature. The friction stabilities of RG and WG are investigated with the applied pressure, rotating speed and automatic transmission fluid (ATF) temperature taken into consideration. Findings The friction torque and surface temperature of WG are larger than those of RG under the same operating condition. The friction torque difference between RG and WG grows with the increase of applied pressure and narrows with the increase of ATF temperature. Additionally, their temperature difference expands via increasing the rotating speed and ATF temperature or reducing the applied pressure; in this way, not only the variable coefficient difference between RG and WG can be narrowed, but also the friction stability of the clutch can be improved dramatically. Originality/value This paper explains the thermodynamic differences between RG and WG; moreover, it is verified experimentally that WG has a better friction stability than RG.

Does coffee taste better with latte art? A neuroscientific perspective

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Liwei Hsu ◽  
Yen-Jung Chen
Keyword(s):  
Experimental Study ◽  
Bayesian Statistics ◽  
Empirical Evidence ◽  
Design Methodology ◽  
Visual Stimulation ◽  
Coffee Consumption ◽  
Two Stage ◽  
Content Type ◽  
Business Environments ◽  
Original Contribution

PurposeVisual stimulation affects the taste of food and beverages. This study aimed to understand how latte art affects coffee consumption by collecting participants' brainwave data and their taste responses.Design/methodology/approachSeventy subjects participated in a two-stage experiment. Electroencephalography (EEG) was employed to measure brainwave activity. With an interval of one week, each stage involved coffee consumption with and without latte art. The responses to the taste of the coffee were also collected for analysis.FindingsSignificant differences were found in the participants' alpha and beta brainwave bands. When drinking coffee with latte art, the participants' alpha bands were significantly lower, whereas the beta bands were higher. These findings were supported by Bayesian statistics. A significant increase was found in the participants' taste of sweetness and acidity with latte art, and Bayesian statistics confirmed the results for sweetness although the evidence on the increase in acidity was anecdotal. No difference was found in the taste of bitterness.Originality/valueThis study highlights the effect of latte art on coffee consumption. The authors analysed the empirical evidence from this two-stage experimental study in the form of the participants' brainwave data and their responses to taste. This study's original contribution is that it explored the crossmodal effects of latte art on consumers' taste of coffee from a neuroscientific perspective. The results of this study can provide empirical evidence on how to effectively use latte art in practical business environments.

Managers’ reactions to customer vs coworker sexual harassment

2018 ◽  
Vol 30 (2) ◽  
pp. 1211-1227 ◽  
Author(s):  
Juan M. Madera ◽  
Priyanko Guchait ◽  
Mary Dawson
Keyword(s):  
Experimental Study ◽  
Sexual Harassment ◽  
Organizational Climate ◽  
Design Methodology ◽  
Well Being ◽  
Content Type ◽  
Educational Implications ◽  
Hotel Managers ◽  
Hospitality Managers ◽  
Practical Implications

Purpose The purpose of this paper is to examine how managers react to sexual harassment as a function of the harasser role that includes a customer as a source of harassment and an organization’s climate for sexual harassment. Design/methodology/approach Using an experiment with a 2 (harasser role: coworker or customer) × 2 (organizational climate of sexual harassment: tolerates or does not tolerate) between-subjects design, 162 hotel managers were randomly assigned to read one of four conditions. Findings Both the harasser role and organization’s climate for sexual harassment influenced the managers’ sexual harassment reactions, specifically whether they label the incident as sexual harassment and attribute responsibility to the organization. The managers’ gender was found to moderate these relationships. Practical implications The results underscore the importance of understanding reactions to sexual harassment because, regardless of who harasses (coworker or customer) and the organizational climate (tolerates or does not tolerate sexual harassment), sexual harassment of any form can be harmful for the well-being of hospitality employees. These results also provide educational implications. Originality/value This is the first known experimental study to examine how hospitality managers react to sexual harassment when the harasser role includes a customer versus a coworker. The results illustrate that the same sexually harassing behavior was perceived less negatively – in regard to both the labeling and attribution of organizational responsibility – when it was done by a customer than by a coworker.

Brand balance: the effect of influencer brand encroachment on interactivity

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lara Hamdan ◽  
Seung Hwan (Mark) Lee
Keyword(s):  
Social Media ◽  
Experimental Study ◽  
Design Methodology ◽  
Mediating Effects ◽  
Personal Power ◽  
Content Type ◽  
Low Level ◽  
Social Media Platforms ◽  
High Level

PurposeAs social media platforms continue to have an increased presence in influencer marketing, researchers and practitioners are seeking ways to optimize the use of these platforms. The purpose of this study is to investigate the effect of brand encroachment, a level of brand's control over the promotion executed by social media influencers (SMIs), on the importance of interactivity of SMIs.Design/methodology/approachThis study examined the effect of brand encroachment on interactivity whilst examining the mediating effects of both passion and personal power. The study was an online, one-factor between-subjects design comparing high level of brand encroachment vs low level of brand encroachment.FindingsThe results of the experimental study suggest that as brand encroachment decreases, there is an increasing importance of being interactive. In addition, with lower brand encroachment, SMIs portray more personal power and passion toward the product or service being promoted.Originality/valueAs influencers create communities via increased levels of engagement, authenticity and relatability, it is of paramount importance that SMIs build relationships through interactivity in low-brand encroachment settings. Brands should offer more opportunities for SMIs to be interactive with their audience, while intrinsically building their personal power and passion as sources for these interactions.

Revisiting the service recovery paradox in the restaurant industry

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jong-Hyeong Kim ◽  
Wenxuan Du ◽  
Hyewon Youn
Keyword(s):  
Experimental Study ◽  
Field Study ◽  
Design Methodology ◽  
Service Management ◽  
Service Recovery ◽  
Restaurant Industry ◽  
Content Type ◽  
Service Failures ◽  
Service Recovery Paradox ◽  
Practical Implications

PurposeThe service recovery paradox (SRP) refers to a particular effect whereby an excellent recovery can turn angry and frustrated customers into loyal ones. Researchers who have studied the SRP have reported mixed findings, with some providing evidence in its support and others not finding any such evidence. To address this discrepancy, this study aims to investigate the SRP.Design/methodology/approachThis study re-examined the phenomenon of the SRP with a field study and provided further evidence in a subsequent experimental study in which the failure and recovery conditions were carefully manipulated.FindingsThe results of this study suggest that the SRP was observed in neither the field study nor the scenario experiment.Practical implicationsThis study can influence the current service management of restaurants with regard to service failures in several ways.Originality/valueThis research is a pioneering effort to examine the SRP by conducting both a field study and a scenario experiment.

Effect of the graphite content on the tribological properties of hybrid Al/SiC/Gr composites processed by powder metallurgy

2015 ◽  
Vol 67 (3) ◽  
pp. 262-268 ◽  
Author(s):  
Adalet Zeren
Keyword(s):  
Silicon Carbide ◽  
Wear Resistance ◽  
Aluminum Alloy ◽  
Design Methodology ◽  
Microstructural Characterization ◽  
Industrial Applications ◽  
Light Weight ◽  
Content Type ◽  
Graphite Content ◽  
Wear Tests

Purpose – The purpose of this paper is to understand the effect of graphite content on the properties of aluminum alloy/silicon carbide/granite (Al/SiC/Gr) composites. Design/methodology/approach – Hardness and wear tests were applied to the powder metallurgical composites, and microstructural characterization was conducted. Findings – Optimum graphite content for maximum wear resistance is reported as weight 6 per cent. Originality/value – Results of this study may help light weight Al/SiC/Gr composites to be used in different industrial applications.

Exploring the effective restaurant CrM ad

2016 ◽  
Vol 28 (11) ◽  
pp. 2473-2492 ◽  
Author(s):  
Sung-Bum Kim ◽  
Kathleen Jeehyae Kim ◽  
Dae-Young Kim
Keyword(s):  
Experimental Study ◽  
Behavioral Intentions ◽  
Design Methodology ◽  
Restaurant Industry ◽  
Content Type ◽  
Cause Related Marketing ◽  
The Impact ◽  
Social Causes ◽  
Practical Implications ◽  
Marketing Messages

Purpose This experimental study aims to examine the effectiveness of cause-related marketing messages that incorporate both text and visuals, as compared to messages comprised solely of text, on the attitudes and behavioral intentions of restaurant customers, and to see if the impact varies across four categories of social causes (health, animal welfare, human services and the environment). Design/methodology/approach This experimental study uses a 2 (type of message) × 4 (cause category) between-subjects design. Findings Restaurant messages that combine text and visuals are more effective than restaurant messages with only text in engendering positive attitudinal and behavioral responses. This paper also found interaction effects between advertisement type and cause category on individuals’ responses (i.e. attitudes and behavioral intentions). Practical implications The messaging strategies suggested by this research will allow the restaurant industry to capitalize on the value of cause-related marketing initiatives. Originality/value This research contributes to the hospitality literature by expanding the realm of research on effective cause-related marketing initiatives.

How does word of mouth affect customer satisfaction?

2016 ◽  
Vol 31 (3) ◽  
pp. 393-403 ◽  
Author(s):  
Wenhua Shi ◽  
Lingshu Tang ◽  
Xiaohang Zhang ◽  
Yu Gao ◽  
Yameng Zhu
Keyword(s):  
Experimental Study ◽  
Customer Satisfaction ◽  
Design Methodology ◽  
Word Of Mouth ◽  
Causal Relation ◽  
Experience Goods ◽  
Content Type ◽  
Customer Expectation ◽  
Managerial Perspective

Purpose Although word of mouth (WOM) affects customers’ purchasing intentions to a large extent, prior research has neglected the role of WOM as a driver of customer satisfaction. Design/methodology/approach Several scholars have suggested that WOM can not only affect customer expectation but also can influence perceived quality. Consistent with existing research results and the expectancy disparity model, this paper established a causal relation between WOM and customer satisfaction and confirmed it was drawing on an experimental study. Findings This paper indicates that positive or negative WOM affects customer satisfaction by promoting or lowering customers’ expectations. This relation is moderated by product type, rather than the source of the WOM. With experience goods, positive (negative) WOM will decrease (increase) customer satisfaction. However, with search goods, positive (negative) WOM will increase (decrease) customer satisfaction. Originality/value The results of this study have implications for academia and management. Academically, this study establishes the causal relation between WOM and customer satisfaction, expanding the research on the relation between WOM and satisfaction. From a managerial perspective, the promotion of WOM also can create certain service risks.

Determinants of viewer attention in concurrent event sponsorship

2018 ◽  
Vol 19 (1) ◽  
pp. 11-24 ◽  
Author(s):  
Felix Boronczyk ◽  
Christopher Rumpf ◽  
Christoph Breuer
Keyword(s):  
Experimental Study ◽  
Regression Analysis ◽  
Return On Investment ◽  
Design Methodology ◽  
Color Contrast ◽  
Related Factors ◽  
Content Type ◽  
Brand Familiarity ◽  
The Impact ◽  
Practical Implications

Purpose The purpose of this paper is to examine the impact of exposure-related and consumer-related factors on the return of sponsorship investment through their influence on viewers’ attention for sponsor signage. Design/methodology/approach Data were collected through an experimental study (n=92) involving eye-tracking and a questionnaire, and were analyzed using regression analysis. Findings The results show that viewers’ attention for sponsor signage is affected by the signage color of concurrent sponsors, as well as viewers’ brand familiarity, and sport involvement. In particular, the findings reveal that viewers’ attention for sponsor signage increases with greater color contrast between concurrently visible sponsor signage. Further, signage receives more attention if viewers are familiar with the brand and less involved with the sponsored event. Given that attention is an important prerequisite for further processing of sponsorship information, these findings have important implications for managers seeking to evaluate the return on their sponsorship investment. Practical implications When assessing the return on a sponsorship investment, marketers should consider the characteristics of surrounding sponsor signage and the audience with regard to their impact on viewers’ attention for their own signage. Ideally, marketers should attempt to create a greater color contrast between their own signage and its surroundings in order to maximize viewer attention. Originality/value This paper provides valuable information on the importance of concurrently visible sponsor signage and audience characteristics for the return on investment of sponsorships through their impact on viewers’ attention.

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