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The anchors of steel wire ropes, testing methods and their results
J. Kre？ák,S. Kropuch,P. Peterka
Metalurgija , 2012,
Abstract: The present paper introduces an application of the acoustic and thermographic method in the defectoscopic testing of immobile steel wire ropes at the most critical point, the anchor. First measurements and their results by these new defectoscopic methods are shown. In defectoscopic tests at the anchor, the widely used magnetic method gives unreliable results, and therefore presents a problem for steel wire defectoscopy. Application of the two new methods in the steel wire defectoscopy at the anchor point will enable increased safety measures at the anchor of steel wire ropes in bridge, roof, tower and aerial cable lift constructions.
Sidra ？eli？nih ？i？anih kabela, metode ispitivanja i njihovi rezultati
Kre？ák, J.,Kropuch, S.,Peterka, P.
- , 2012,
Abstract: Sa？etak U ovom prilogu predstavlja se primjena jedne akusti？ke i termografske metode u defektoskopskom ispitivanju nepokretnih ？eli？nih ？i？anih kablova na najkriti？nijoj to？ki, na sidru. Najprije su prikazana mjerenja i njihovi rezultati dobiveni tim novim defektoskopskim metodama. U defektoskopskim ispitivanjima na sidru na？iroko kori？tena magnetska metoda pru？a nepouzdane rezultate te stoga predstavlja problem za defektoskopiju ？eli？ne ？ice. Primjena dviju novih metoda u defektoskopiji ？eli？ne ？ice na to？ki sidra omogu？it ？e uporabu mjera ve？e sigurnosti na sidru ？eli？nih ？i？anih kablova u konstrukcijama mostova, krovova, tornjeva, ？i？ara
Defektoskopska ispitivanja ？eli？nih pletenih u？adi
Kre？ák, J.,Kropuch, S.,Peterka, P.
- , 2004,
Abstract: Sa？etak Visoki utjecaj na trajnost u？eta u radu ima interakcija s opremom na kojoj je u？e postavljeno. Osim te interakcije, na trajnost u？eta utje？e i odgovaraju？i oblik u？eta. Pra？enje trajnosti postavljenog ？eli？nog u？eta osigurano je defektoskopskim ispitivanjem ili pra？enjem veli？ine tereta koju u？e podi？e. Podizanje tereta se prati samo na nekoj opremi na kojoj je u？e montirano. U ？lanku je prikazana uska povezanost izme？u defektoskopskih ispitivanja i izvr？enog rada pri podizanju tereta
The anchors of steel wire ropes, testing methods and their results
Kre？ák, J.,Kropuch, S.,Peterka, P.
- , 2012,
Abstract: Sa？etak The present paper introduces an application of the acoustic and thermographic method in the defectoscopic testing of immobile steel wire ropes at the most critical point, the anchor. First measurements and their results by these new defectoscopic methods are shown. In defectoscopic tests at the anchor, the widely used magnetic method gives unreliable results, and therefore presents a problem for steel wire defectoscopy. Application of the two new methods in the steel wire defectoscopy at the anchor point will enable increased safety measures at the anchor of steel wire ropes in bridge, roof, tower and aerial cable lift constructions
Mechanical Tests of the Steel Wire Ropes and Steel Wires
Kre？ák, J.,Kropuch, S.,Peterka, P.
- , 2004,
Abstract: Sa？etak In the article we are dealing with the problems of the steel wires and steel wire ropes testing, which are very often used today, and at the same time some negatives of the standards valid for steel wire rope testing are mentioned. In the article are mentioned also the drawbacks of new European standards which are implemented to the system of Slovak technical standards. From the rope quality assessment point of view the lifting capacity of the rope as a whole is important. In the article is briefly presented new shredder machine, with the maximum shredding force of 2500 kN. The steel wire ropes with 63 mm in diameter and maximum length of 6 m can be tested using this machine
Mehani？ka ispitivanja ？eli？nih u？adi i ？eli？nih ？ica
Kre？ák, J.,Kropuch, S.,Peterka, P.
- , 2004,
Abstract: Sa？etak U ？lanku se raspravlja o problematici ispitivanja ？eli？nih ？ica i u？adi koja se danas vrlo ？esto koriste, a jednovremeno se spominju i negativne karakteristike normi va？e？ih za testiranje ？eli？nog u？eta. U ？lanku su spomenuti i nedostaci novih evropskih standarda koji se uvode u sistem slova？kih tehni？kih normi. Sa stajali？ta procjene kakvo？e u？eta, va？an je kapacitet dizanja u cjelini. U ？lanku je kratko prikazana nova kidalica s maksimalnom snagom kidanja od 2500 kN. Na tom stroju se mogu ispitati ？eli？na u？ad promjera 63 mm i maksimalne du？ine 6 m
Non - Destructive Tests of the Steel Wire Ropes
Kre？ák, J.,Kropuch, S.,Peterka, P.
- , 2004,
Abstract: Sa？etak The ropes are one of the important component units used in the transport. The high impact on the rope durability in the operation has its interaction with the equipment, on which it was installed. Beside this interaction proper design of the rope also influences its durability also. Installed steel wire rope durability monitoring is provided by the means of steel wire ropes defectoscopic testing or by monitoring the amount of the rope hoisting work. The rope hoisting work is monitored only at some equipment, on which the rope is installed. In the article the narrow continuity between steel wire defectoscopic tests and performed hoisting work of wire is shown
Estimation of quality for steel wire ropes according
Boro？ka Ján,Kre？ák Jozef,Pavel Peterka
Acta Montanistica Slovaca , 1997,
Abstract: Life and work dependability of steel wire ropes depend also on their quality. Test results of the steel wire ropes for pull, bend and torque are used for determination of their work capacity by safety factors and standards. To estimate the quality of steel wire ropes a factor of unequal pull steel wires, which we evaluated for sixty nine operating steel wire ropes made in various countries, can be calculated. The tests revealed that producers of steel wire ropes use for their products steel wires with unequal properties, so that results of the calculation is more disperse especially for bend and torque. Our results this type of steel wire ropes to have no guarantee of long life in comparison with present standards.
Diagnostics of Pipelines System
？troffek, E.,Peterka, P.,Kre？ák, J.,Kropuch, S.
Metalurgija , 2006,
Abstract: Underground gas storage in Slovakia has a 25 years history. The first phase of building, the object for underground reservoir Láb began in 1977. The underground reservoir is separated into five independent parts, phases of building. All parts are concentrated in central control area. The oldest part of equipment for underground reservoir needs overhaul and maintenance today. The maintenance process uncovers a lot of problems that were created through building process. The great problems are uncovered in the area of pipeline system diagnostics. In the past, maintenance operators faced difficult decisions, to choose the best method or combination of methods to evaluate pipeline condition.
Diagnostics of Pipelines System
Kre？ák, J.,Kropuch, S.,Peterka, P.,？troffek, E.
- , 2006,
Abstract: Sa？etak Underground gas storage in Slovakia has a 25 years history. The first phase of building, the object for underground reservoir Láb began in 1977. The underground reservoir is separated into five independent parts, phases of building. All parts are concentrated in central control area. The oldest part of equipment for underground reservoir needs overhaul and maintenance today. The maintenance process uncovers a lot of problems that were created through building process. The great problems are uncovered in the area of pipeline system diagnostics. In the past, maintenance operators faced difficult decisions, to choose the best method or combination of methods to evaluate pipeline condition
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