Experimental study on adhesion property of UHMWPE fiber/nano-epoxy by fiber bundle pull-out tests

2006 ◽  
Vol 66 (15) ◽  
pp. 2736-2742 ◽  
Author(s):  
A. Zhamu ◽  
W.H. Zhong ◽  
J.J. Stone
Keyword(s):  
Experimental Study ◽  
Fiber Bundle ◽  
Adhesion Property ◽  
Uhmwpe Fiber ◽  
Pull Out

Auszugverhalten von Schaftfräsern*/Pull-out behavior of end mills – Experimental study on different clamping devices with various clamping mechanisms

2018 ◽  
Vol 108 (05) ◽  
pp. 353-358
Author(s):  
E. Abele ◽  
F. Ali ◽  
M. Berger
Keyword(s):  
Experimental Study ◽  
Test Bench ◽  
Mechanical Load ◽  
Mechanisms Of Action ◽  
Heavy Duty ◽  
Press Fit ◽  
Pull Out ◽  
The Press ◽  
End Mills ◽  
Tool Position

Aus Schwerzerspanung und Turbinenschaufelfertigung ist bekannt, dass Werkzeuge aus dem Spannfutter ausgezogen werden. Die veränderte Werkzeugposition führt zur Abweichung von den vorgegebenen Toleranzen und einer geringeren Fertigungsqualität oder Beschädigung des Werkstücks. Der Artikel untersucht das Auszugsverhalten verschiedener Spannfutter. Mit einem Prüfstand können die Einflüsse der mechanischen Belastung und der Klemmlänge auf die Haltekraft im Pressverband betrachtet und die Wirkmechanismen beim Auszug des Werkzeuges aus dem Spannfutter sensorisch ermittelt werden.   From heavy-duty cutting and turbine blade manufacturing it is known that tools pull out from chucks. A change in tool position leads to deviations from tolerance and decreases manufacturing quality or damages the workpiece. This article explores the extension behavior of different chucks on a specifically designed test bench. This allows determining how mechanical load and clamping length influence the holding force in the press fit and what mechanisms of action affect the extraction of the tool from the chuck.

TM3-10 National survey and experimental evaluation of commonly used external ventricular drain (EVD) securement methods in a porcine model; recommendations to improve practise

2019 ◽  
Vol 90 (3) ◽  
pp. e17.3-e16
Author(s):  
D Akarca ◽  
A Durnford ◽  
F Ewbank ◽  
J Hempenstall ◽  
A Sadek ◽  
...  
Keyword(s):  
Experimental Study ◽  
Experimental Model ◽  
Experimental Evaluation ◽  
Porcine Model ◽  
External Ventricular Drain ◽  
Insertion Site ◽  
Trial Data ◽  
Significant Morbidity ◽  
Pull Out ◽  
Catheter Fracture

ObjectivesExternal ventricular drain (EVD) dislodgement is common and can lead to significant morbidity and mortality. UK trial data suggests dislodgement as high as 12%. This study aimed to establish the range of methods used nationally and determine the most secure method in a porcine model.DesignSurvey and experimental study.Subjects23 neurosurgical units surveyed. Porcine cadaver experimental model.MethodsSurvey distribution was made through the British Neurosurgical Trainee Research Collaborative. 15 securement methods were tested on the porcine model and peak pull-out force before EVD failure was measured. Failure was defined as catheter displacement 1 cm from the insertion site, catheter fracture or suture fracture.ResultsNationally, five EVD securement methods were in common use. There were considerable differences in peak pull-out force between methods. The most secure methods were a construct consisting of anchoring suture, further multiple sutures around a coil of catheter followed by either a soft (25.85N, 95% CI 24.95 N-26.75N) or hard plastic flange (29.05N, 95% CI 25.69 N-32.41N). Individually, anchoring sutures, soft flanges, VentriFix and staples were least secure, whilst multiple sutures and hard flanges were most secure.ConclusionsAn anchoring suture followed by a coil of catheter and a flange is the most secure method for securing EVDs, withstanding up to 8.2 times the force of a single anchoring suture. It is easily employed and may decrease the likelihood of EVD dislodgement and associated complications.

Experimental study on yarn friction slip in the yarn pull-out test

2017 ◽  
Author(s):  
Weikang Li ◽  
Zhenkun Lei ◽  
Fuyong Qin ◽  
Ruixiang Ba ◽  
Qingchao Fang
Keyword(s):  
Experimental Study ◽  
Pull Out

Experimental Study on the Interface Characteristics of Geogrid-Reinforced Fly Ash

2012 ◽  
Vol 446-449 ◽  
pp. 264-268 ◽  
Author(s):  
Wei Shi ◽  
Jin Han ◽  
Yuan Hao Jiang ◽  
Yong Bin Li
Keyword(s):  
Experimental Study ◽  
Fly Ash ◽  
Friction Coefficient ◽  
Reinforced Soil ◽  
Paper Study ◽  
Water Impact ◽  
Interface Friction ◽  
Pull Out ◽  
Interface Characteristics ◽  
Interface Parameters

The technology of Reinforced soil has been widely used in civil engineering, its theory has some development . However, there is nearly any study about the theory of Geogrid-reinforced fly ash .In this paper, study the interface characteristics between fly ash and geogrid through the pull-out test,reach the following conclusions:the size of normal stress and water impact the interface parameters between the geogrid and fly ash;the interface friction coefficient between Geogrid and fly ash is small,adding gravel to fly ash can improve the interface friction coefficient between geogrid and fly ash.

scholarly journals Investigation of Suspension Ball Joint Pull Out Force Based on FEA Method and Experimental Study

2018 ◽  
Vol 1 (1) ◽  
pp. 1002-1009
Author(s):  
Alimurtaza Rutci ◽  
Fatih Selman Eren
Keyword(s):  
Experimental Study ◽  
Axial Direction ◽  
Ball Joint ◽  
Axial Loads ◽  
Element Analysis ◽  
Front Suspension ◽  
Analysis And Design ◽  
Pull Out ◽  
Safety Characteristic ◽  
Ball Joints

Suspension ball joints are always used to connect the control arms to the knuckle since they are the only joints which allow three degrees of rotational freedom. On the purpose of an sufficient performance of the ball joint, it is very important to prevent the extraction of the ball stud from the ball joint housing. Ball joint’s housing material and shape design must withstand axial loads in the ball stud from axial direction in order to avoid the ball stud pull out keeping the ball stud inside the housing. The ball stud pull out force is a critical and safety characteristic function because it is related to failure mode for front suspension system. These paper investigate how to determine of suspension ball joint pull out force based on FEA method and experimental study. With respect to results of finite element analysis and experimental study, it is possible to monitoring deformation and displacement versus the load. The result of FE analysis and design verifications make it possible to determination of suspension ball joint pull out force.

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