Evaluation of cutting fragments in relation to force dynamics in actuated disc cutting

2021 ◽  
Vol 146 ◽  
pp. 104850
Author(s):  
Rachel Xu ◽  
Sevda Dehkhoda ◽  
Paul C. Hagan ◽  
Joung Oh
Keyword(s):  
Force Dynamics ◽  
Disc Cutting

Study of effect of deforming element acting surfaces angle on characteristics of power dynamics of combined hole mandrelling method

2020 ◽  
pp. 212-216
Author(s):  
A.V. Shchedrin ◽  
V.F. Aleshin ◽  
I.Yu. Ignatkin ◽  
N.Yu. Chikhacheva
Keyword(s):  
Power Dynamics ◽  
Outer Diameter ◽  
Force Dynamics ◽  
Steel 12Khn3a

The effect of the deforming element acting surfaces angle on the characteristics of the force dynamics of the combined deforming cutting mandrelling method of holes in the workpieces of various height and outer diameter from steel 12KhN3A is studied.

Effects of tool fracture on machining force dynamics

1988 ◽  
Vol 17 ◽  
pp. 205-212 ◽  
Author(s):  
L.C. Lee ◽  
K.S. Lee ◽  
K.G. Kwok
Keyword(s):  
Force Dynamics ◽  
Machining Force

Variable and intermittent grip force control in response to differing load force dynamics

2018 ◽  
Vol 237 (3) ◽  
pp. 687-703 ◽  
Author(s):  
Francis M. Grover ◽  
Patrick Nalepka ◽  
Paula L. Silva ◽  
Tamara Lorenz ◽  
Michael A. Riley
Keyword(s):  
Force Control ◽  
Grip Force ◽  
Load Force ◽  
Force Dynamics ◽  
Grip Force Control

scholarly journals A novel method for sensor-based quantification of single/multi-cellular traction dynamics and remodeling in 3D matrices

2020 ◽  
Author(s):  
Bashar Emon ◽  
Zhengwei Li ◽  
Md Saddam Hossain Joy ◽  
Umnia Doha ◽  
Farhad Kosari ◽  
...  
Keyword(s):  
Self Assembly ◽  
Single Cells ◽  
Human Colon ◽  
Matrix Remodeling ◽  
Tissue Stiffness ◽  
Force Dynamics ◽  
Cell Functions ◽  
The Matrix ◽  
Cancer Tumor

AbstractCells in vivo generate mechanical forces (traction) on surrounding 3D extra cellular matrix (ECM) and cells. Such traction and biochemical cues may remodel the matrix, e.g. increase stiffness, which in turn influences cell functions and forces. This dynamic reciprocity mediates development and tumorigenesis. Currently, there is no method available to directly quantify single cell traction and matrix remodeling in 3D. Here, we introduce a method to fulfil this long-standing need. We developed a high-resolution microfabricated sensor which hosts a 3D cell-ECM tissue formed by self-assembly. It measures cell forces and tissue-stiffness and can apply mechanical stimulation to the tissue. We measured single and multicellular force dynamics of fibroblasts (3T3), human colon (FET) and lung (A549) cancer cells and cancer associated fibroblasts (CAF05) with 1 nN resolution. Single cells show significant force fluctuations in 3D. FET/CAF co-culture system, mimicking cancer tumor microenvironment, increased tissue stiffness by 3 times within 24 hours.

scholarly journals Efficiency increase in combined electro-chemical grinding of hard alloys by diamond metal bonded disks

2017 ◽  
Vol 2 (2) ◽  
pp. 3-8
Author(s):  
Ольга Медведева ◽  
Olga Medvedeva ◽  
Александр Янюшкин ◽  
Aleksandr Yanyushkin ◽  
Павел Архипов ◽  
...  
Keyword(s):  
Theoretical Models ◽  
Capacity Factor ◽  
Hard Alloys ◽  
Metal Bond ◽  
Disc Cutting ◽  
Efficiency Increase ◽  
The Stability ◽  
Cutting Capacity ◽  
Diamond Disc

In the paper there are emphasized problems connected with the use of diamond metal bond abrasive discs at the processing of hard alloys. The reasons of cutting capacity decrease are pointed out which limit a wide-spread use of a diamond metal bond tool. It is established that for the achievement of a required productivity and quality of ready products is possible at the expense of the application of electro-chemical and electro-physical methods of stropping and also due to the improvement of abrasive disc designs. This work reports the investigations of a cutting capacity of diamond discs at the working of hard alloys by a combined method of electro-chemical grinding with simultaneous continuous stropping. As an output parameter there was accepted a cutting capacity factor of a diamond which was assesses according to the changes in effective working capacity. On the basis of the results of the experimental data processed there were obtained theoretical models of the dependence of the cutting capacity factor upon electric and mechanical constituents of the modes of combined electro-chemical grinding. A complex of investigations directed to the detection of efficient modes ensuring the stability of cutting capacity in diamond metal bond discs is carried out. It is experimentally confirmed that the application of the method of combined electro-chemical grinding with the simultaneous continuous disc stropping at working hard alloy materials allows increasing diamond disc cutting capacity by 15% in comparison with other methods of the diamond working of such materials.

scholarly journals Socioeconomic Status, Institutional Power, and Body Mass Index among Chinese Adults

2021 ◽  
Vol 18 (20) ◽  
pp. 10620
Author(s):  
Weidong Li ◽  
Shuzhuo Li ◽  
Marcus W. Feldman
Keyword(s):  
Body Mass Index ◽  
Socioeconomic Status ◽  
Body Mass ◽  
Positive Association ◽  
Chinese Adults ◽  
State Institutions ◽  
Force Dynamics ◽  
Institutional Power ◽  
Negative Effect ◽  
Positive Effect

Despite the vast literature on the socioeconomic status (SES) gradient of obesity among adult people, no study has investigated the relationship between institutional power and body mass index. Using national survey data from the “China Labor-force Dynamics Survey 2016” (CLDS 2016), multistage cluster-stratified probability proportional to size (PPS) sampling was employed to select cases from 29 provinces, cities, and autonomous regions in China. This study adopts an institutional approach to explore the influences of SES and institutional power on the state of being overweight or severely overweight (obese) among Chinese adults. It is shown that SES has a non-linear influence on being overweight or obese, higher education has a negative effect on being overweight or obese, income has an inverted U-shaped effect on being overweight or obese, and having a managerial or administrative job has a positive effect on being overweight but less so on obesity. These findings reveal that disparities in health outcome and risks are due to inequality in SES. The work unit is a stronger predictor of adults being overweight or obese than occupation. Working in the public sector has a positive effect on being overweight relative to working in the private sector, and only state institutions and government departments have a positive association with obesity. Our results indicate that institutional structure still has effects on individuals’ life chances in the era of China’s market transition.

scholarly journals Regulation of Force Dynamics in Fast Twitch Muscle

2010 ◽  
Vol 24 (S1) ◽  
Author(s):  
Willemijn Groenendaal ◽  
Jeroen Jeneson ◽  
Robert Wiseman ◽  
Klaas Nicolay ◽  
Peter Hilbers ◽  
...  
Keyword(s):  
Force Dynamics ◽  
Fast Twitch Muscle ◽  
Fast Twitch
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