Application of Notch Strain Approach to Evaluate Fatigue Life of Construction Equipment

Seung Ho Han; Jeong Woo Han; Byung Chun Shin; Sung Kyu Kwak; Jou Sik Kim

doi:10.4028/www.scientific.net/KEM.345-346.387

Paper Titles

Fatigue Behaviour of Case-Hardened P/M Steels
p.371

On the Fatigue Crack Growth Behavior of a Nitrided and Shot Peened Steel
p.375

Fatigue Crack Initiation in Crystalline Materials – Experimental Evidence and Models
p.379

Effect of Temperature on the Low Cycle Fatigue of Cast Inconel 792-5A
p.383

Application of Notch Strain Approach to Evaluate Fatigue Life of Construction Equipment
p.387

Soft Surface Layer of Age-Hardened Al-Zn Alloys and Its Effect on the Fatigue Strength
p.391

Two Methods for Determination of Fatigue Crack Propagation Limit Curves and their Application for Different Materials
p.395

Fracture Assessment of Flaws in Weldments using FITNET FFS Procedure: An Overview
p.401

Alignment and Combination Rules on Multiple Flaws in Fitness-for-Service Procedures
p.411

HomeKey Engineering MaterialsKey Engineering Materials Vols. 345-346Application of Notch Strain Approach to Evaluate...

Application of Notch Strain Approach to Evaluate Fatigue Life of Construction Equipment

Abstract:

The technical development of construction equipment such as wheel loader leads to an increase of not only amount of workload per hour, but also magnitude of allowable stress range. Since welded structures of the wheel loader occupy approximately 40-60% of its total weight and are subjected to incessant fatigue loads, fatal fatigue failures occur occasionally around the welded zone during its practical operation in the field. To reasonably evaluate the fatigue life, the effect of these geometries and welding residual stress on the fatigue life should be taken into account. In this paper, the modified notch strain approach developed previously by the authors is applied practically to assess the fatigue life of welded joints in boom and front frame structures of the wheel loader.