Development of a framework for operational phase life assessment of machine tools using a structural approach

2021 ◽  
Vol 13 (4) ◽  
pp. 317
Author(s):  
Kumar Sarthak ◽  
Girish Kumar ◽  
Ajith Tom James ◽  
Umang Soni ◽  
Mohammad Asjad
Keyword(s):  
Machine Tools ◽  
Structural Approach ◽  
Life Assessment ◽  
Operational Phase

Development of a framework for operational phase life assessment of machine tools using a structural approach

2021 ◽  
Vol 13 (4) ◽  
pp. 317
Author(s):  
Girish Kumar ◽  
Ajith Tom James ◽  
Mohammad Asjad ◽  
Umang Soni ◽  
Kumar Sarthak
Keyword(s):  
Machine Tools ◽  
Structural Approach ◽  
Life Assessment ◽  
Operational Phase

Gas Turbine Combustor Liner Life Assessment Using a Combined Fluid/Structural Approach

2006 ◽  
Vol 129 (1) ◽  
pp. 69-79 ◽  
Author(s):  
T. Tinga ◽  
J. F. van Kampen ◽  
B. de Jager ◽  
J. B. W. Kok
Keyword(s):  
Thermal Loading ◽  
Absolute Number ◽  
Computational Effort ◽  
Operating Conditions ◽  
Structural Approach ◽  
Life Assessment ◽  
Annular Combustor ◽  
Number Of Cycles ◽  
Dynamics Analyses ◽  
Combustor Liner

A life assessment was performed on a fighter jet engine annular combustor liner, using a combined fluid/structural approach. Computational fluid dynamics analyses were performed to obtain the thermal loading of the combustor liner and finite element analyses were done to calculate the temperature and stress/strain distribution in the liner during several operating conditions. A method was developed to analyze a complete flight with limited computational effort. Finally, the creep and fatigue life for a measured flight were calculated and the results were compared to field experience data. The absolute number of cycles to crack initiation appeared hard to predict, but the location and direction of cracking could be correlated well with field data.

The Chatterbox: A Device for Hearing Chatter as Sections are Cut

1973 ◽  
Vol 31 ◽  
pp. 360-361
Author(s):  
C. W. McCutchen ◽  
Lois W. Tice
Keyword(s):  
Machine Tools ◽  
Cutting Tool ◽  
Guerilla Warfare ◽  
History Of ◽  
Chatter Marks

Ultramicrotomists live in a state of guerilla warfare with chatter. This situation is likely to be permanent. We can infer this from the history of machine tools. If set the wrong way for the particular combination of cutting tool and material, most if not all machine tools will chatter.In more than 100 years since machine tools became common, no one has evolved a practical recipe that guarantees avoiding chatter. Rather than follow some single very conservative rule to avoid chatter in all cases, machinists detect it when it happens, and change conditions until it stops. This is possible because they have no trouble telling when their cutting tool is chattering. They can see chatter marks, and they can also hear a sometimes deafening noise.

Intelligence and Personality

2020 ◽  
Vol 41 (3) ◽  
pp. 124-132
Author(s):  
Marc-André Bédard ◽  
Yann Le Corff
Keyword(s):  
Personality Traits ◽  
Big Five ◽  
Real Life ◽  
Big Five Personality Traits ◽  
Original Study ◽  
Life Assessment ◽  
Big Five Personality ◽  
Verbal Intelligence ◽  
Nonverbal Intelligence ◽  
French Canadian

Abstract. This replication and extension of DeYoung, Quilty, Peterson, and Gray’s (2014) study aimed to assess the unique variance of each of the 10 aspects of the Big Five personality traits ( DeYoung, Quilty, & Peterson, 2007 ) associated with intelligence and its dimensions. Personality aspects and intelligence were assessed in a sample of French-Canadian adults from real-life assessment settings ( n = 213). Results showed that the Intellect aspect was independently associated with g, verbal, and nonverbal intelligence while its counterpart Openness was independently related to verbal intelligence only, thus replicating the results of the original study. Independent associations were also found between Withdrawal, Industriousness and Assertiveness aspects and verbal intelligence, as well as between Withdrawal and Politeness aspects and nonverbal intelligence. Possible explanations for these associations are discussed.

Structural approach to instructional problems.

1977 ◽  
Vol 32 (1) ◽  
pp. 33-53 ◽  
Author(s):  
Joseph M. Scandura
Keyword(s):  
Structural Approach

Review of Statistical Thinking: A Structural Approach.

1974 ◽  
Vol 19 (1) ◽  
pp. 58-58
Author(s):  
B. J. WINER
Keyword(s):  
Structural Approach ◽  
Statistical Thinking
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