Stress-substructure relationships in cyclically and monotonically deformed wavy slip mode metals

1982 ◽  
Vol 13 (6) ◽  
pp. 1033-1041 ◽  
Author(s):  
E. S. Kayali ◽  
A. Plumtree
Keyword(s):  
Slip Mode ◽  
Wavy Slip

scholarly journals Temperature dependent load partitioning and slip mode transition in a eutectic AlCoCrFeNi2.1 high entropy alloy

Materialia ◽  
2021 ◽  
pp. 101118
Author(s):  
Nitesh Raj Jaladurgam ◽  
Adrianna Lozinko ◽  
Sheng Guo ◽  
Tung-Lik Lee ◽  
Magnus Hörnqvist Colliander
Keyword(s):  
High Entropy Alloy ◽  
Mode Transition ◽  
Slip Mode ◽  
Temperature Dependent ◽  
High Entropy

scholarly journals Intracellular coupling modulates biflagellar synchrony

2021 ◽  
Vol 18 (174) ◽  
pp. 20200660
Author(s):  
Hanliang Guo ◽  
Yi Man ◽  
Kirsty Y. Wan ◽  
Eva Kanso
Keyword(s):  
Mathematical Models ◽  
Activity Level ◽  
Live Cells ◽  
Basal Bodies ◽  
Slip Mode ◽  
Biological Parameters ◽  
Hydrodynamic Coupling ◽  
Dimensionless Ratio ◽  
The Individual

Beating flagella exhibit a variety of synchronization modes. This synchrony has long been attributed to hydrodynamic coupling between the flagella. However, recent work with flagellated algae indicates that a mechanism internal to the cell, through the contractile fibres connecting the flagella basal bodies, must be at play to actively modulate flagellar synchrony. Exactly how basal coupling mediates flagellar coordination remains unclear. Here, we examine the role of basal coupling in the synchronization of the model biflagellate Chlamydomonas reinhardtii using a series of mathematical models of decreasing levels of complexity. We report that basal coupling is sufficient to achieve inphase, antiphase and bistable synchrony, even in the absence of hydrodynamic coupling and flagellar compliance. These modes can be reached by modulating the activity level of the individual flagella or the strength of the basal coupling. We observe a slip mode when allowing for differential flagellar activity, just as in experiments with live cells. We introduce a dimensionless ratio of flagellar activity to basal coupling that is predictive of the mode of synchrony. This ratio allows us to query biological parameters which are not yet directly measurable experimentally. Our work shows a concrete route for cells to actively control the synchronization of their flagella.

Thickness-Dependent Tensile Behavior of Cu-Mn Alloys under Different Dislocation Slip Modes

2019 ◽  
Vol 294 ◽  
pp. 104-110 ◽  
Author(s):  
Le Le Kang ◽  
Dong Han ◽  
Xiao Wu Li
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Size Effect ◽  
Uniform Elongation ◽  
Tensile Behavior ◽  
Dislocation Slip ◽  
Slip Mode ◽  
Planar Slip ◽  
Metallic Materials

To explore the role of dislocation slip mode playing in the size effect of mechanical behavior of metallic materials, the tensile behavior of Cu-5at.%Mn and Cu-20at.%Mn alloys with thickness (t) spanning from 0.1 to 2.0 mm is investigated. The results reveal that the yield strength σYS of Cu-5at.%Mn alloy displays an independence of thickness, whereas the ultimate tensile strength σUTS and the uniform elongation δ show an obvious size effect. The σUTS and δ first slightly decrease as t is reduced from 2.0 to 0.5 mm, but evidently drop when t is below 0.5 mm. A similar size effect is also exhibited in Cu-20at.%Mn alloy; however, the variation trend of “the smaller the weaker” in size effect can be weakened by the planar slip of dislocations occurring during the deformation of this alloy.

Study of a piezo-electric actuated vibratory micro-robot in stick-slip mode and investigating the design parameters

2017 ◽  
Vol 89 (3) ◽  
pp. 1927-1948 ◽  
Author(s):  
Hadi Jalili ◽  
Hassan Salarieh ◽  
Gholamreza Vossoughi
Keyword(s):  
Design Parameters ◽  
Slip Mode ◽  
Stick Slip ◽  
Micro Robot ◽  
Piezo Electric

Performance Assessment of Slip Mode Frequency Shift (SMS) Islanding Detection Methods

2014 ◽  
Vol 699 ◽  
pp. 546-551 ◽  
Author(s):  
Ahmad Farid Sapar ◽  
Chin Kim Gan ◽  
Meysam Shamshiri ◽  
Anis Niza Ramani
Keyword(s):  
Frequency Shift ◽  
Distributed Generation ◽  
Mode Frequency ◽  
Detection Methods ◽  
Time Range ◽  
Islanding Detection ◽  
Slip Mode ◽  
Safety Hazard ◽  
Detection Techniques ◽  
Prevention Methods

The awareness concerning the grid connected Photovoltaic (PV) has become vital and a major concern nowadays. Islanding detection is one of the most dominant challenges for distributed generation system connected to the utility grid. In addition, islanding has not been a preferable option as it may pose safety hazard and may cause damage to power generation and power supply facilities as a result of unsynchronized re-closer. Therefore, the islanding detection techniques are needed to ensure safe and reliable system operation. One of the established islanding prevention methods is the Slip Mode Frequency Shift (SMS) islanding method, which has numerous advantages over the other techniques. This paper investigates the active islanding detection methods and specifically focused on the SMS islanding method. The results show that the SMS islanding method successfully detected an unintentional fault and managed to isolate the system within the prescribed time range.

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