October 2013

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HP Engineering Case Histories: Case 75: Analyzing wear when troubleshooting

Wear occurs frequently on machinery. In its simplest terms, it is the undesirable removal of material. When troubleshooting the root cause of wear in equipment, the engineer’s interest should be ..

Sofronas, T., Consulting Engineer

Wear occurs frequently on machinery. In its simplest terms, it is the undesirable removal of material. When troubleshooting the root cause of wear in equipment, the engineer’s interest should be to determine what caused the wear, how much wear is expected or how it can be avoided. There are many wear mechanisms for metals. However, the most common form is abrasion wear. Abrasive or rubbing type of wear This is caused by a motion similar to a sanding block on a surface. Between the two surfaces is an abrasive that removes material. To understand the complexity of this condition, consider a simple wear model as shown in Fig. 1.1 The block is being worn down a certain amount, δ (in.

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