A Comparative Investigation of the Sliding Wear of Some FCC Metals

1983 ◽  
Vol 105 (1) ◽  
pp. 36-41 ◽  
Author(s):  
R. Glardon ◽  
I. Finnie
Keyword(s):  
Sliding Wear ◽  
Friction And Wear ◽  
Copper Alloys ◽  
Comparative Investigation ◽  
Experimental Investigations ◽  
Future Research ◽  
Subsurface Layers ◽  
Areas Of Interest ◽  
Cyclic Plastic Deformation

Experimental investigations of the friction and wear of four copper alloys and pure nickel are presented. Measurements of the shape and dimensions of the wear tracks and of the extent of subsurface layers are also reported. The results are discussed in terms of mechanical behavior and possible correlations with conventional mechanical properties are considered. The role of cyclic plastic deformation is emphasized and areas of interest for future research are suggested.

The role of surface topography and normal load in the initiation of ratchetting-peak friction, seizure, scuffing, and elastic shakedown

2021 ◽  
pp. 1-12
Author(s):  
Vimal Edachery ◽  
V. Swamybabu ◽  
Gurupatham Anand ◽  
Paramasamy Manikandan ◽  
Satish V. Kailas
Keyword(s):  
Steady State ◽  
Surface Topography ◽  
Sliding Wear ◽  
Friction And Wear ◽  
Critical Parameter ◽  
Normal Load ◽  
Sliding Direction ◽  
Elastic Shakedown ◽  
Lubrication Conditions

Abstract Surface topography is a critical parameter that can influence friction and wear in engineering applications. In this work, the influence of surface topography directionality on seizure and scuffing initiation during tribological interactions is explored. For this, unidirectional sliding wear experiments were carried out in immersed lubrication conditions for various normal loads. The tribological interactions were studied using EN31-60 HRC flats and SAE52100-60HRC pins in a sphere on flat configuration. The results show that, in some cases, the sliding interactions in the initial cycles lead to a high friction coefficient of up to ∼0.68 in lubricated conditions, which was termed as ‘peak friction’, and this was accompanied by scuffing. The existence of peak friction was found to be dependent on surface topography directionality, especially when the directionality in topography was parallel to the sliding direction. Continuous ratchetting was found to be the cause of peak friction which was accompanied by seizure and scuffing. When the topography directionality was perpendicular or independent of sliding direction, elastic shakedown occurred at earlier cycles and prevented peak friction initiation, scuffing and also facilitated for higher steady-state friction values.

scholarly journals A survey of social media use in emergency situations: A literature review

2020 ◽  
pp. 026666692091389 ◽  
Author(s):  
Najeeb Gambo Abdulhamid ◽  
Daniel Azerikatoa Ayoung ◽  
Armin Kashefi ◽  
Boyce Sigweni
Keyword(s):  
Social Media ◽  
Literature Review ◽  
Emergency Response ◽  
The Other ◽  
Future Research ◽  
Emergency Situations ◽  
Research Stream ◽  
Use Of Social Media ◽  
Areas Of Interest

This study reviews literature on the use of Social Media (SM) in emergency response operations while identifying gaps in this research stream that need attention from Information Systems (IS) researchers. The research is grounded in past works and attempts to build on research on the application of SM in emergencies. It focuses on understanding the role of SM in the prevention, management and response to emergencies. The review contains a detailed literature exposition of IS and disasters journals. The appraisal of such research stream led the review to focus on the concept of digital volunteerism as an offshoot of crowdsourcing initiatives. Findings from the review reveal that previous studies overlooked the interfacing challenges between formal and traditional aid agencies on one hand and digital humanitarians on the other. Consequently, we identify gaps in the extant literature and propose areas of interest for future research.

The role of alloying elements in the friction and wear of copper alloys

Wear ◽  
1977 ◽  
Vol 44 (2) ◽  
pp. 377-391 ◽  
Author(s):  
Y. Taga ◽  
A. Isogai ◽  
K. Nakajima
Keyword(s):  
Friction And Wear ◽  
Copper Alloys ◽  
Alloying Elements

scholarly journals Information as a key dimension to develop industrial asset management in manufacturing

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Adalberto Polenghi ◽  
Irene Roda ◽  
Marco Macchi ◽  
Alessandro Pozzetti
Keyword(s):  
Literature Review ◽  
Data Management ◽  
Future Development ◽  
Asset Management ◽  
Future Research ◽  
Special Focus ◽  
Content Type ◽  
Areas Of Interest ◽  
Role Of Information

PurposeThe purpose of this work is to investigate industrial asset management (AM) in manufacturing. After depicting gaps for AM in this sector, the role of information as a key dimension is considered to realise a summary of challenges and advices for future development.Design/methodology/approachThe work is grounded on an extensive systematic literature review. Considering the eligible documents, descriptive statistics are provided and a content analysis is performed, both based on a sector-independent normative-based framework of analysis.FindingsAM principles, organisation and information are the dimensions defined to group ten areas of interest for AM in manufacturing. Information is the major concern for an effective AM implementation. Moreover, Internet of Things and big data management and analytics, as well as data modelling and ontology engineering, are the major technologies envisioned to advance the implementation of AM in manufacturing.Research limitations/implicationsThe identified challenges and advices for future development may serve to stimulate further research on AM in manufacturing, with special focus on information and data management. The sector-independent normative-based framework may also enable to analyse AM in different contexts of application, thus favouring cross-sectorial comparisons.Originality/valueIndustries with higher operational risk, like Oil&Gas and infrastructure, are advanced in AM, while others, like some in manufacturing, are laggard in this respect. This literature review is the first of a kind addressing AM in manufacturing and depicts the state-of-the-art to pave the way for future research and development.

Focus

2019 ◽  
pp. 417-435
Author(s):  
Christina S. Kim
Keyword(s):  
Discourse Structure ◽  
Experimental Investigations ◽  
Future Research ◽  
Attention And Memory ◽  
Discourse Comprehension ◽  
Pronoun Resolution ◽  
Semantics And Pragmatics ◽  
Experimental Findings ◽  
The Impact

This chapter provides an overview of experimental investigations on focus, how focus is cued and interpreted, and how the perception of focus affects other aspects of sentence or discourse comprehension. Early studies about the impact of focusing on attention and memory continue to inform current research; since that time, experimental findings related to focus have gone hand in hand with developments in theoretical semantics and pragmatics. This chapter covers some main strands of this body of experimental work, including the influence of focus on syntactic ambiguity resolution, focus as a cue to discourse structure, focus and pronoun resolution, the role of focus in referential disambiguation, the inference of focus alternatives, and cues to focus projection. The chapter concludes with some points to watch for in future research.

A Study of the Friction and Wear of Cartridge and Free-Cutting Brass

1983 ◽  
Vol 105 (1) ◽  
pp. 31-35 ◽  
Author(s):  
R. Glardon ◽  
I. Finnie
Keyword(s):  
Friction And Wear ◽  
Deformation Characteristics ◽  
Subsurface Layers ◽  
Quantitative Results

Friction and wear experiments on brasses with and without lead particles are presented and compared. Quantitative results are given for the dimensions of the wear tracks and of the subsurface layers. Differences in the behavior of the two alloys are treated in terms of deformation characteristics and microstructure and the role of a dispersion of lead particles on friction and wear is discussed.

Coping Humor as a Mediator Between Emotional Intelligence and Job Satisfaction

2017 ◽  
Vol 16 (3) ◽  
pp. 155-159 ◽  
Author(s):  
Peizhen Sun ◽  
Jennifer J. Chen ◽  
Hongyan Jiang
Keyword(s):  
Job Satisfaction ◽  
Emotional Intelligence ◽  
Future Research ◽  
Satisfaction Scale ◽  
Primary School Teachers ◽  
Mediating Role ◽  
Regulation Of Emotion ◽  
The Relationship ◽  
Overall Job Satisfaction

Abstract. This study investigated the mediating role of coping humor in the relationship between emotional intelligence (EI) and job satisfaction. Participants were 398 primary school teachers in China, who completed the Wong Law Emotional Intelligence Scale, Coping Humor Scale, and Overall Job Satisfaction Scale. Results showed that coping humor was a significant mediator between EI and job satisfaction. A further examination revealed, however, that coping humor only mediated two sub-dimensions of EI (use of emotion and regulation of emotion) and job satisfaction. Implications for future research and limitations of the study are discussed.

Public Administration in the Islamic World: Considering the Importance of Religion, its Values and Culture

2019 ◽  
Vol 19 (2) ◽  
pp. 23-38
Author(s):  
Daniel Hummel
Keyword(s):  
Public Administration ◽  
Core Values ◽  
Comparative Perspective ◽  
Religious Values ◽  
Future Research ◽  
Islamic World ◽  
Salient Region ◽  
The People ◽  
Comparative Public Administration

A small but growing area of public administration scholarship appreciates the influence of religious values on various aspects of government. This appreciation parallels a growing interest in comparative public administration and indigenized forms of government which recognizes the role of culture in different approaches to government. This article is at the crossroads of these two trends while also considering a very salient region, the Islamic world. The Islamic world is uniquely religious, which makes this discussion even more relevant, as the nations that represent them strive towards legitimacy and stability. The history and core values of Islam need to be considered as they pertain to systems of government that are widely accepted by the people. In essence, this is being done in many countries across the Islamic world, providing fertile grounds for public administration research from a comparative perspective. This paper explores these possibilities for future research on this topic.

Moderating Role of Gender in the Relationship between Cognitive Errors and Anxiety among Adolescents

2020 ◽  
Vol 4 (1) ◽  
pp. 86-102
Author(s):  
Tasnim Rehna ◽  
Rubina Hanif ◽  
Muhammad Aqeel
Keyword(s):  
Mental Health Problems ◽  
Adolescent Psychopathology ◽  
Future Research ◽  
Cognitive Errors ◽  
Adolescent Anxiety ◽  
Study Results ◽  
The Status ◽  
Manifest Anxiety ◽  
The Relationship

Background: Widespread social paradigms on which the status variances are grounded in any society, gender plays pivotal role in manifestation of mental health problems (Rutter, 2007). A hefty volume of research has addressed the issue in adults nonetheless, little is vividly known about the role of gender in adolescent psychopathology. Sample: A sample of 240 adolescents (125 boys, 115 girls) aging 12-18 years was amassed from various secondary schools of Islamabad with the approval of the Federal Directorate of Education (FDE), relevant authorities of the schools and the adolescents themselves. Instruments: Taylor Manifest Anxiety Scale (Taylor & Spence, 1953) and Children’s Negative Cognitive Errors Questionnaire (CNCEQ) by Leitenberg et al., (1986) were applied in present study. Results: Multiple regression analysis revealed that cognitive errors jointly accounted for 78% of variance in predicting anxiety among adolescents. Findings also exhibited that gender significantly moderated the relationship between cognitive errors and adolescent anxiety. Implications of the findings are discoursed for future research and clinical practice.

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