scholarly journals Failure Analysis of Wire Ropes Used in Multi-Wire Machines for Cutting Blocks of Stone

2021 ◽  
Vol 18 (3) ◽  
pp. 278-284
Author(s):  
Sergio Baragetti
Keyword(s):  
Service Life ◽  
Failure Analysis ◽  
Cutting Tools ◽  
Contact Fatigue ◽  
Wire Rope ◽  
Damage Mechanisms ◽  
Wire Ropes ◽  
Increase Service Life ◽  
The Wire ◽  
Fatigue Corrosion

ABSTRACT: This paper reports the analyses carried out with the company Pedrini SpA ad unico socio, located in Carobbio degli Angeli, Bergamo (IT). Wire ropes with diamond beads, used as cutting tools in multi-wire machines for cutting blocks of stone, were considered and a failure analysis of the wire ropes was carried out. The aim of the paper is to highlight the damage mechanisms of the wire ropes to increase service life of these cutting tools. Microscope observations and the penetrating liquids method were used to analyze the damaged wire ropes. Fatigue, corrosion and contact fatigue problems were observed and the effect of the centering of the beads on the wire rope was studied.

scholarly journals Failure Analysis of Stainless Steel Lanyard Wire Rope

2018 ◽  
Vol 3 (3) ◽  
pp. 143-150
Author(s):  
Aginaparru Sambasiva Rao ◽  
Ashok Kumar Singh
Keyword(s):  
Stainless Steel ◽  
Fracture Surface ◽  
Failure Analysis ◽  
Wire Rope ◽  
304 Stainless Steel ◽  
Aisi 304 Stainless Steel ◽  
Humid Atmosphere ◽  
Aisi 304 ◽  
Wire Ropes ◽  
The Wire

Present work describes the failure analysis of AISI 304 stainless steel lanyard wire rope which has failed during application in humid atmosphere. The wire rope has 7´19 construction which means that it consists of seven strands and each strand having 19 wires twisted in a helical fashion. The microstructures and properties of failed wire rope have been investigated and compared with unused wire rope. Both the periphery and fracture surface of the wire rope display the presence of corrosion debris enriched with O and Cl. The fracture surfaces of the failed and unused wire ropes display intergranular and dimples, respectively. The lanyard wire rope has been exposed in corrosive atmosphere and failed in intergranular mode due to enrichment of O and Cl along the grain boundaries.

The Decontaminating Device in Steel Wire Rope Automatic Cleaning, Detection and Maintenance Integration System

2013 ◽  
Vol 483 ◽  
pp. 382-385 ◽  
Author(s):  
Jun Jie Chen ◽  
Hui Wang ◽  
Jing Sheng Lin ◽  
Chao Fu ◽  
Lu Tang
Keyword(s):  
Service Life ◽  
Simulation Analysis ◽  
Steel Wire ◽  
Wire Rope ◽  
Elastic Plates ◽  
Integration System ◽  
Driving System ◽  
Wire Ropes ◽  
System A ◽  
The Wire

In order to improve the service life of wire rope used n tensile stringing, an automatic cleaning, detection and maintenance integration system was designed. Through the simulation analysis of elastic plates that fix the fixed brushes and the design of the rotating brushes driving system, a wire rope decontamination device assembled fixed brushes and rotating brushes was developed according to the demand of steel wire decontamination. The brush head adopts the design concept of elastic device, which makes the wire rope pressing force adjustable, ensures the wire connectors passable and makes the axial dirt sweeping of different diameter wire rope possible. The overall rotation mechanism with multiple brushes can circumferentially sweep the dirt in the wire rope gap. Then, the wire ropes were comprehensively sweeped with no dead cleanup. The device has been actually used, and the results showed that the decontamination effect is good.

Arrangement Characteristics and Wear Distribution of Wire Rope in Parallel Grooved Multi-Layer Winding

2013 ◽  
Vol 423-426 ◽  
pp. 842-845 ◽  
Author(s):  
Zhi Hui Hu ◽  
Yong Hu ◽  
Ji Quan Hu
Keyword(s):  
Experimental Study ◽  
Wire Rope ◽  
Wire Ropes ◽  
The Wire ◽  
Wear Damage

Based on the analysis of multi-layer winding arrangement characteristic of the wire rope in Lebus drum, the experimental study is carried on wear distribution of the wire rope in parallel grooved multi-layer winding. The result shows that, the wire rope is arranged regularly in each drum area in parallel grooved multi-layer winding; the wear of wire ropes in crossover zone is more serious than that of the parallel zone; in the same-layer wire rope winding in crossover zone, the wear damage during the wire rope winding in crossover zone at the end of each-layer drum is the most serious.

Failure Analysis of a Redundant Reeving Hoist

1976 ◽  
Vol 98 (4) ◽  
pp. 1166-1169
Author(s):  
A. J. Edmondson
Keyword(s):  
Failure Analysis ◽  
Wire Rope ◽  
Single Component ◽  
Design Parameters ◽  
Component Failure ◽  
Wire Ropes ◽  
Lower Block ◽  
Critical Materials ◽  
Failure Conditions ◽  
Fail Safe

An analysis is presented of a reeving arrangement suitable for the hoisting of critical materials requiring fail-safe criteria. The system consists of two independent wire ropes symmetrically threaded through the crown and lower blocks and reeved by a single takeup drum. The analysis provides for the load in each line of the wire rope remaining after failure of one rope occurs. The motion of the lower block and load are also provided for the variety of failure conditions considered. The analysis is useful to predict the effect of various design parameters on the integrity of system in the event of a single component failure.

scholarly journals Design and analysis of elevator wire ropes

2021 ◽  
Vol 12 ◽  
pp. 20
Author(s):  
Anil Babu Seelam ◽  
Mohammad Saif Jawed ◽  
Sachidananda Hassan Krishanmurthy
Keyword(s):  
Best Practices ◽  
Research Paper ◽  
Wire Rope ◽  
New Materials ◽  
Wire Ropes ◽  
Mechanical Handling ◽  
The Wire ◽  
Design Calculations

In this research paper design and analysis of wire ropes used in elevator have been presented. The main objective of this study is to find the best practices on handling wire ropes for safety and to reduce the downtime of elevators due to wire rope failures. Design calculations have been done to calculate the apt dimensions and design is constructed on Auto Desk inventor software and the analysis have been performed using Ansys. Two configurations of the wire ropes have been studied and from this result it can be concluded that the design of wire rope is possible to relieve mechanical handling and to improve the design of wire ropes making it more durable by possible inclusion of new materials which in turn increases the efficiency and life of wire ropes without compromising safety.

scholarly journals Failure analysis of stainless steel lanyard wire rope

2019 ◽  
Vol 16 (1) ◽  
Author(s):  
A. Sambasiva Rao ◽  
A. K. Singh
Keyword(s):  
Stainless Steel ◽  
Fracture Surface ◽  
Failure Analysis ◽  
Grain Boundaries ◽  
Wire Rope ◽  
304 Stainless Steel ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Wire Ropes ◽  
Fracture Surfaces

Present work describes the failure analysis of AISI 304 stainless steel consisting of 7x19 construction lanyard wire rope which has failed during service. The microstructures and properties of failed wire rope have been investigated and compared with unused wire rope. Both the periphery and fracture surface of the wire rope display the presence of corrosion debris enriched with O and Cl. The fracture surfaces of the failed and unused wire ropes display intergranular and dimples, respectively. The lanyard wire rope has been exposed in corrosive atmosphere and failed in intergranular mode due to enrichment of O and Cl along the grain boundaries.

Failures of Cranes and Lifting Equipment

2021 ◽  
pp. 415-434
Author(s):  
Burak Akyuz ◽  
Nicholas Steinhoff
Keyword(s):  
Failure Analysis ◽  
Abrasive Wear ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Wire Rope ◽  
Corrosion Cracking ◽  
Common Cause ◽  
Wire Ropes ◽  
Materials Used ◽  
Lifting Equipment

Abstract The types of metal components used in lifting equipment include gears, shafts, drums and sheaves, brakes, brake wheels, couplings, bearings, wheels, electrical switchgear, chains, wire rope, and hooks. This article primarily deals with many of these metal components of lifting equipment in three categories: cranes and bridges, attachments used for direct lifting, and built-in members of lifting equipment. It first reviews the mechanisms, origins, and investigation of failures. Then the article describes the materials used for lifting equipment, followed by a section explaining the failure analysis of wire ropes and the failure of wire ropes due to corrosion, a common cause of wire-rope failure. Further, it reviews the characteristics of shock loading, abrasive wear, and stress-corrosion cracking of a wire rope. Then, the article provides information on the failure analysis of chains, hooks, shafts, and cranes and related members.

scholarly journals RESEARCH OF BROKEN WIRE ON THE ROPE SURFACE USING DYNAMIC METHOD / LYNO IŠORINIAME SLUOKSNYJE NUTRŪKUSIŲ VIELŲ TYRIMAS, TAIKANT DINAMINĮ METODĄ

2013 ◽  
Vol 5 (6) ◽  
pp. 629-632
Author(s):  
Ernestas Šutinys ◽  
Vytautas Bučinskas
Keyword(s):  
Experimental Test ◽  
Dynamic Method ◽  
Dynamic Properties ◽  
Excitation Frequency ◽  
Wire Rope ◽  
Wire Ropes ◽  
The Wire

This paper is intended to reveal possibilities to research of brokenwire on the wire ropes using dynamic properties of tensedwire rope and research properties of broken wire in piece ofwire rope when it is affixed on the wire rope in special testrig. During experimental test wire rope and broken wire on thetensed wire rope dynamic properties was estimated dependingon excitation frequency, also including affixed weight on thetensed wire rope dynamic properties. Finally, results are givenand conclusions are made. Santrauka Straipsnis skirtas mokslinių tyrimų galimybėms atskleisti. Naudojant dinamines savybes, bandyta aptikti nutrūkusias vielas ant įtempto plieninio lyno ir ant plieninio lyno gabaliuko rasti nutrūkusią vielą, kai šis lyno gabaliukas mechaniškai tvirtinamas ant plieninio lyno specialiame bandymų stende. Eksperimentinių tyrimų metų buvo išmatuotos plieninio lyno ir ant įtempto plieninio lyno nutrūkusios vielos dinaminės savybės priklausomai nuo lyno žadinimo dažnio, taip pat įvertinant įtempto plieninio lyno dinamines savybes, pritvirtinus ant jo papildomą svorį. Pateikiami tyrimų rezultatai ir išvados.

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.

Failure Analysis of Crane Wire Rope

2015 ◽  
Vol 819 ◽  
pp. 467-472 ◽  
Author(s):  
Shaiful Rizam Shamsudin ◽  
Mohd Harun ◽  
Mohd Noor Mazlee ◽  
Azmi Rahmat ◽  
Rohaya Abdul Malek
Keyword(s):  
Failure Analysis ◽  
Outer Surface ◽  
Fatigue Cracking ◽  
Wire Rope ◽  
Offshore Platform ◽  
Large Size ◽  
Excessive Load ◽  
The Wire ◽  
Central Strand ◽  
Fatigue Mechanism

A failure analysis of a broken multi strand wire rope from an offshore platform crane was performed. The wire rope was operated for less than 5 years. The wire consists of seven strands, one central strand and six strands around it. The diameter of the small wires was about 0.78-0.94 mm and the larger wires was a round of 1.52 - 1.78 mm. The large size wires were found fractured by cyclic torsional stresses as characterized by the presence of fatigue cracking originating from the outer surface of the wire. Meanwhile the smaller wires were fractured in a ductile manner under excessive load after the larger wire broken out due to the fatigue mechanism.

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