A Wire Contact in the Construction of a Steel Rope

2014 ◽  
Vol 683 ◽  
pp. 3-8
Author(s):  
Jozef Krešák ◽  
Pavel Peterka ◽  
Stanislav Kropuch ◽  
Andrea Bérešová
Keyword(s):  
Steel Wire ◽  
Transportation Systems ◽  
Wire Rope ◽  
Factors Affecting ◽  
Wire Ropes ◽  
Construction Design ◽  
Deformation Properties ◽  
Labor Safety ◽  
Mining Coal ◽  
Corrosive Environments

A rope is an important, highly effective and one of the oldest transportation systems used in transport by mankind. Nowadays, steel ropes are mainly used for moving loads in mining - coal and ore exploitation, vertical or horizontal transport of persons and goods by cranes, elevators, lifts and cable ways. In many cases steel wire ropes are employed in extreme conditions with respect to the load of the rope: high temperature plants, mining corrosive environments and etc. In terms of labor safety it is necessary to certify each rope people come in contact when working with loads or a rope is used for transportation. It has to be done earlier than a rope is put into operation or on the market. Despite the fact the tests were performed correctly, a rope may not achieve the desired rope life. The great impact on the life of a wire rope has its interaction with a device a rope is deployed on. Interaction of a steel wire rope with a device it is deployed on has a great impact on its life. Durability is also affected by the way a rope is loaded, its maintenance and regular re-examination as well as its construction. Design accuracy is assessed according to strength and deformation properties of wires a rope is made of and a rope cross-section construction is taken in account as well. The important aspect of steel wire rope durability (which can be mostly influenced by a manufacturer) is an appropriate design of diameters and angles of wires winding in accordance with exactly defined conditions of operation. The paper presents models of ropes equally loaded which eliminates the most unfavorable factors affecting their life cycle.

The Analysis of Wire Rope Tension Sensor Elastic Body Based on Solidworks

2012 ◽  
Vol 591-593 ◽  
pp. 1603-1606 ◽  
Author(s):  
Peng Liu ◽  
Xin Zhang ◽  
Ya Kun Huang ◽  
Ji Xu Rong
Keyword(s):  
Elastic Body ◽  
Steel Wire ◽  
Strain Sensor ◽  
Wire Rope ◽  
Reliable Data ◽  
Inspection System ◽  
Software Modeling ◽  
Modeling And Analysis ◽  
Wire Ropes ◽  
Tension Sensor

This article introduces unbalance phenomenon when several steel wire ropes hoist skip and some main methods of measuring steel wire ropes tension in coal mine. Use the strain effects to design a sensor which can be used to measure the tension of steel wire rope, to provide reliable data for the subsequent online tension inspection system. In order to facilitate the sensor in this system, the height of the sensor needs to be low enough. As one of the most important parts of the strain sensor, the elastic body is also low-height. To solve that problem, first using the SolidWorks software modeling and analysis of elastic body to design the sizes and obtain the best patch position of strain gauge.

The influence of rotation speed on the bending fatigue lifetime of steel wire ropes

2010 ◽  
Vol 225 (3) ◽  
pp. 520-525 ◽  
Author(s):  
Y A Onur ◽  
C E İmrak
Keyword(s):  
Rotation Speed ◽  
Steel Wire ◽  
Experimental Tests ◽  
Wire Rope ◽  
Experimental Investigations ◽  
Thermal Camera ◽  
Fatigue Lifetime ◽  
Bending Fatigue ◽  
Wire Ropes ◽  
Different Diameters

This article presents experimental investigations to determine the influence of rotation speed on the bending fatigue lifetime of rotation-resistant rope and non-rotation-resistant rope. Heat generated by the rotation speed on steel wire rope samples has been measured by a thermal camera. Two sheaves with different diameters have been used to obtain the effect of sheave diameters on the heat alterations and bending fatigue lifetime. Two experimental tests have been conducted to determine the effect of insufficient lubrication on the bending fatigue lifetime. The results indicate that rotation speed affects the steel wire rope lifetime subjected to bending fatigue.

Study of Steel Wire Ropes Defects

2014 ◽  
Vol 683 ◽  
pp. 55-60 ◽  
Author(s):  
Michal Lesňák ◽  
Jan Procházka ◽  
Ivo Hlavatý ◽  
Jaromír Pištora ◽  
Gabriela Kostiuková
Keyword(s):  
Finite Element ◽  
Magnetic Fields ◽  
Magnetic Induction ◽  
Steel Wire ◽  
Wire Rope ◽  
Finite Element Program ◽  
Wire Ropes ◽  
Element Program

This article deals with the study of defects in steel wire. In the study we model magnetic fields around rope genetated by magnetized part of rope. The work is based on the finite element program ANSYS. For the purposes of the experiments we consider one strand wire rope construction. We define different kinds of defects and faults. The shape of the magnetic induction lines of generated fields depends on the size of the defect, the depth of rope violation or the presence of other nearby defects. The location and number of disturbances have been chosen to achieve the most versatile outputs. All of these modifications were analyzed and the results displayed in the 3D colored.

Determination of Elastic Modulus of Steel Wire Ropes for Computer Simulation

2014 ◽  
Vol 683 ◽  
pp. 22-27 ◽  
Author(s):  
Ján Boroška ◽  
Alena Pauliková ◽  
Vladimír Ivančo
Keyword(s):  
Computer Simulation ◽  
Elastic Modulus ◽  
Influencing Factors ◽  
Modulus Of Elasticity ◽  
Steel Wire ◽  
Wire Rope ◽  
Wire Ropes ◽  
Real Value ◽  
Construction Type

Modulus of elasticity of steel wire rope (elastic modulus) is a characteristic value, which is important not only for users of the steel rope, but also for designers of machines and machinery that are equipped with the steel wire rope. Values of the elastic modulus depends predominately on the elastic modulus of the material, which the rope is manufactured from as well as it depends on the various other factors. The most important influencing factors are as follows: rope construction, type of core, angle and way of wire stranding, angle and way of rope lay as well as kind of lubricant. The real value of the elastic modulus has also impact on prolongation of the steel wire rope and on intensity of its dynamical loading. The rope elastic modulus value can be determined by means of the various methods. There are analysed in this article such methods for determination of the rope elastic modulus, which can be applied for a computer simulation.

scholarly journals A Sensor for Broken Wire Detection of Steel Wire Ropes Based on the Magnetic Concentrating Principle

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3763 ◽  
Author(s):  
Zhang ◽  
Jing ◽  
Xu ◽  
Zhan ◽  
Tan
Keyword(s):  
Permanent Magnet ◽  
Structural Parameters ◽  
Steel Wire ◽  
Sensor Arrays ◽  
Wire Rope ◽  
Hall Sensor ◽  
Wire Ropes ◽  
Depth Analysis ◽  
The Wire ◽  
Lift Off

Electromagnetic testing is the most widely used technique for the inspection of steel wire ropes. As one of the electromagnetic detecting approaches, the magnetic flux leakage (MFL) method has the best effect for the detection of broken wires. However, existing sensors based on MFL method still have some problems. (1) The size of the permanent magnet exciter is usually designed according to experience or rough calculation, and there is not enough depth analysis for its excitation performance; (2) Since the detectable angular range for a single Hall component is limited, Hall sensor arrays are often employed in the design of MFL sensors, which will increase the complexity of the subsequent signal processing due to the extensive use of Hall components; (3) Although the new magneto-resistance sensor has higher sensitivity, it is difficult to be applied in practice because of the requirement of the micron-level lift-off. To solve these problems, a sensor for the detection of broken wires of steel wire ropes based on the principle of magnetic concentration is developed. A circumferential multi-circuit permanent magnet exciter (CMPME) is employed to magnetize the wire rope to saturation. The traditional Hall sensor array is replaced by a magnetic concentrator to collect MFL. The structural parameters of the CMPME are optimized and the performance of the magnetic concentrator is analyzed by the finite element method. Finally, the effectiveness of the designed sensor is verified by wire breaking experiment. 1–5 external broken wires, handcrafted on the wire rope with a diameter of 24 mm, can be clearly identified, which shows great potential for the inspection of steel wire ropes.

scholarly journals Design of Tunnel Magnetoresistive-Based Circular MFL Sensor Array for the Detection of Flaws in Steel Wire Rope

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Liu Xiucheng ◽  
Wang Yujue ◽  
Wu Bin ◽  
Gao Zhen ◽  
He Cunfu
Keyword(s):  
Magnetic Field ◽  
Sensor Array ◽  
Steel Wire ◽  
Flaw Detection ◽  
Sensor Arrays ◽  
Wire Rope ◽  
Mutual Correlation ◽  
Wire Ropes ◽  
Technical Requirements ◽  
Lift Off

Tunnel magnetoresistive (TMR) devices have superior performances in weak magnetic field detection. In this study, TMR devices were first employed to form a circular magnetic flux leakage (MFL) sensor for slight wire rope flaw detection. Two versions of this tailor-made circular TMR-based sensor array were presented for the inspection of wire ropes with the diameters of 14 mm and 40 mm, respectively. Helmholtz-like coils or a ferrite magnet-based magnetizer was selected to provide the proper magnetic field, in order to meet the technical requirements of the TMR devices. The coefficient of variance in the flaw detection performance of the sensor array elements was experimentally estimated at 4.05%. Both versions of the MFL sensor array were able to detect multiple single-broken wire flaws in the wire ropes. The accurate axial and circumferential positions of these broken wire flaws were estimated from the MFL scanning image results. In addition, the proposed TMR-based sensor array was applied to detect the MFL signal induced by slight surface wear defects. A mutual correlation analysis method was used to distinguish the signals caused by the lift-off fluctuation from the MFL scanning image results. The MFL sensor arrays presented in this study provide inspiration for the designing of tailor-made TMR-based circular sensor arrays for cylindrical ferromagnetic structural inspections.

scholarly journals Behavior of Reinforced Concrete Beams Strengthened by CFRP and Wire Rope

2018 ◽  
Vol 1 (3) ◽  
pp. 1-17
Author(s):  
Aziz Ibrahim Abdulla ◽  
Khalid Naji Mahasneh ◽  
Mohammad W Shaheen ◽  
Ammar Saleem Khazaal ◽  
Muataz Ibrahim Ali
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Steel Wire ◽  
Wire Rope ◽  
Concrete Cover ◽  
Reinforced Concrete Beams ◽  
Concentrated Load ◽  
Wire Ropes ◽  
A New Technique ◽  
Economic Technology

The current research aims to study the effect of static loads on concrete beams strengthened by wire rope. Each beam was subjected to a central concentrated load with an average loading speed of 1 kN/min. The use of steel wire rope has been suggested as a new economical technique to strengthen and rehabilitate reinforced concrete beams, as well as to support the CFRP used in strengthening. The best results were obtained when using either CFRP and wire rope together, or wire rope on its own. It was found that strengthening by CFRP and wire rope increased the flexural strength, hardness, and toughness, and decreased the maximum deflection. Furthermore, the use of wire ropes with CFRP increased the splitting strength and prevented the concrete cover separation between CFRP and concrete. The use of wire rope is a new technique that significantly enhances the performance of concrete in flexure. Using a combination of wire ropes and CFRP, and wire rope on its own showed an increase in stiffness up to about 135.24% and 72.13%, and a reduction in ultimate deflection up to about 70.31% and 49.1%, respectively as compared with control beams. Wire ropes can be used in various forms to resist flexure, shear, and torsion stresses due to ease of formation per required shape. Moreover, its efficiency can be enhanced by increasing the rope’s diameter or reducing the spacing between the wrapped rope’s segments. This renders strengthening by wire rope a new, efficient, and economic technology. © Copyright 2018 JASET, International Scholars and Researchers Association

scholarly journals The use of a magnetic flux leakage in the assessment of the technical state of a steel wire rope subjected to bending

2018 ◽  
Vol 48 (1) ◽  
pp. 493-513
Author(s):  
Paweł Mazurek ◽  
Jerzy Kwaśniewski ◽  
Maciej Roskosz ◽  
Ryszard Siwoń-Olszewski
Keyword(s):  
Magnetic Field ◽  
Steel Wire ◽  
Wire Rope ◽  
Technical State ◽  
Magnetic Flux Leakage ◽  
Wire Ropes ◽  
State Of Stress ◽  
Real Objects ◽  
The Relationship ◽  
Flux Leakage

Abstract The technical state of steel wire ropes has a decisive impact on the safety of people using the equipment in which they are installed. The basis for increasing safety is the ability to assess the condition of the working steel wire. The article presents the use of magnetometric sensors to determine the relationship between the number of steel wire rope bends and its magnetic field induction value. This knowledge, referred to ropes working on real objects, allows to determine the state of stress prevailing in them as well as their condition.

scholarly journals ON THE PERFORMANCE OF STEEL WIRE ROPE AS THE EXTERNAL STRENGTHENING OF RC BEAMS WITH DIFFERENT END-ANCHOR TYPES

2018 ◽  
Vol 80 (5) ◽  
Author(s):  
Yanuar Haryanto ◽  
Buntara Sthenly Gan ◽  
Arnie Widyaningrum ◽  
Nanang Gunawan Wariyatno ◽  
Ari Fadli
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Steel Wire ◽  
Wire Rope ◽  
Reinforced Concrete Beams ◽  
Wire Ropes ◽  
External Strengthening ◽  
Improved Performance

This work investigated the performance of steel wire rope as an external strengthening for reinforced concrete beams with different end-anchor types. A study is conducted on reinforced concrete beams with the size of 100 mm x 150 mm x 1000 mm, consisting of 1 beam without strengthening (BTP); 1 beam strengthened with 2 steel wire ropes of diameter 6 mm with end-anchor type 1 (BPA1); and 1 beam strengthened with 2 steel wire ropes of diameter 6 mm with end-anchor type 2 (BPA2). It is found that the external strengthening of reinforced concrete beams using steel wire rope has the advantage of better serviceability due to its higher ductility than the beam without strengthening. The load-carrying capacity of reinforced concrete beams, which are externally strengthened with steel wire ropes, shows a significant increase of up to 60%. All specimens meet the minimum ductility requirements; in this case, the strengthening beams have other advantages, i.e. improved performance in preventing brittle failure. In this study, the increased stiffness is associated proportionately with the increased strength. This is supported by previous findings which suggest that the stiffness cannot be completely separated and independent of the strength. The failure in all specimens appeared in the same phases and all specimens experienced flexural failure. The ratios of end-anchor type 1 to end-anchor type 2 were close to 1 for all the parameters studied, which means that both types of end-anchor make an equally good contribution to the performance of steel wire rope.

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