Category: Case Studies

White paper – Strain Gauging and Fatigue

This whitepaper discusses the benefits of strain gauging when applied to fatigue assessments of critical mechanical equipment. The basic principles of fatigue analysis are discussed, with a focus on the effect of errors in assessment inputs. Finally, the strain gauging results for a drum separator are presented, demonstrating the fact that although approximate equipment loads

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White paper – Fracture and Fatigue Crack Growth

This whitepaper discusses the application of numerical modelling for the calculation of fracture parameters for Fitness-For-Service assessments. The shortcomings of analytical solutions presented in assessment codes, and the requirements for high degrees of accuracy of calculated fracture parameters, are discussed. The main two solid mechanics numerical techniques are briefly outlined and two commercially available fracture

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Cycle Counting for Fatigue Analysis

1. PROBLEM DESCRIPTION Deacon Engineers carried out the design of large, rotating digesters for the treatment of municipal solid waste. The digesters are approximately 65m long and 4.5m in diameter and rotate continuously, at 1 rpm, while processing up to 500 tonnes of waste. Due to the cyclic nature of the loading, careful attention had

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Solution for Vibration in Crushing Structure

Problem The primary crusher structure at an iron ore facility was exhibiting consistent, unacceptably high vibration levels during operation. The primary crusher operated at approximately 4Hz and was fed from a vibratory feeder operating at approximately 1000tph, at a frequency of 800-1000rpm. Deacon Engineers were contracted to come with a solution and necessary modifications to

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Safe Design of Rotating Equipment

1. PROBLEM DESCRIPTION Deacon Engineers carried out the design of large, rotating digesters for the treatment of municipal solid waste. The digesters are approximately 65m long and 4.5m in diameter and rotate continuously, at 1 rpm, while processing up to 500 tonnes of waste. Due to the cyclic nature of the loading, careful attention had

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Fatigue Assessment of Welded Joints

1. PROBLEM DESCRIPTION Deacon Engineers carried out the design of large, rotating digesters for the treatment of municipal solid waste. The digesters are approximately 65m long and 4.5m in diameter and rotate continuously, at 1 rpm, while processing up to 500 tonnes of waste. Due to the cyclic nature of the loading, careful attention had

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