GINDIN: продукция Casar (Казар) в России

Dipl.- Ing. Roland Verreet and Dr. Isabel Ridge: Wire Rope Forensics WIRE ROPE FORENSICS 1 If you have ever read a Sherlock Holmes story, you know the the pattern: A dead body is lying on the floor. Was it murder or suicide? If it was murder, who killed the person? Why did he do it? And how did he do it? Sherlock Holmes will inspect the roomwith his magnifying glass, collect a limited number of seemingly trivial and unrelated details and then present a surprising, but undisputable answer to all these questions. The work of a wire rope detective resembles very much that of Sherlock Holmes: A steel wire rope has failed and the accident has caused a lot of damage. The rope user, and maybe also a judge in court, will want to know whether the rope was murdered (by external factors) or committed suicide (e. g. in multi layer spooling on the drum). They will want to know how it happened, for various reasons: One reason, of course, is just human curiosity. Another reason is that they need to know what caused the accident in order to prevent similar occurences in the future. A third reason is money. Wire rope failures are often associated with expensive damage, and someone will have to pay the bill. But you do not always need a wire rope failure: The analysis of a discarded rope can also give you valuable information about your crane, the way it operated and the rope you have been using. In the hands of an experienced inspector, this information might lead to a better crane or wire rope design or to an improvement in maintenance procedures and safety. The tools of the detectives have changed: The fingerprint powder has been replaced by groove gauges, digital calipers, accelerometers, goniometers, digital cameras and laptops, and the magnifying glass has been replaced by the Scanning Electron Microscope (SEM). Dipl.- Ing. Roland Verreet has spent more than thirty years in steel wire rope research and development and has investigated hundreds of rope accidents. Dr. Isabel Ridge has almost 20 years of experience in wire rope research and the laboratory testing of steel wire rope behaviour and endurance.