Reliability Analysis of the Hydro-System of Excavator SchRs 800 Using Weibull Distribution

Dašić, Predrag; Živković, Milutin; Karić, Marina

doi:10.4028/www.scientific.net/amm.806.173

Cited by 4 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Weibull distribution [32][33][34] and modifications of the Weibull distribution [35,36] for reliability analysis were discussed by several authors. Many researchers have suggested the lifetime distribution of the hydraulic excavator follows the Weibull distribution [37][38][39][40]; they stated above use Weibull distribution as theoretical reliability model, according to the experimental data, analyzed the reliability of the subsystems for the excavator. So the reliability goal of the new systems in this study is gained based on Weibull analysis.…”

Section: Proposed Comprehensive Methods For Reliability Allocationmentioning

confidence: 99%

A Comprehensive Method of Apportioning Reliability Goals for New Product of Hydraulic Excavator

Liu

Zeng

Wan

et al. 2019

Mathematical Problems in Engineering

View full text Add to dashboard Cite

It is important to allocate a reliability goal for the hydraulic excavator in the early design stage of the new system. There are some effective methods for setting reliability target and allocating its constituent subsystems in the field of aerospace, electric, vehicles, railways, or chemical system, but until now there is no effective method for the hydraulic excavator or engineering machinery. In this paper, an approach is proposed which combines with the conventional reliability allocation methods for setting reliability goals and allocating the subsystem and parts useful in the early design stage of the hydraulic excavator newly developed. It includes Weibull analysis method, modified Aeronautical Radio Inc. (ARINC) method, and modified systematic failure mode and effect analysis (FMEA) method. After completing reliability allocation, it is necessary to organize the designers and experts to evaluate the rationality of the reliability target through FEMA analysis considering feasibility of the improvement technically for the part which was new developed or had fault in its predecessor. The proposed approach provides an easy methodology for allocate a practical reliability goal for the hydraulic excavator capturing the real life behavior of the product. It proposes a simple and unique way to capture the improvement of the subsystems or components of the hydraulic excavator. The proposed approach could be extended to consider other construction machinery equipment and have practicality value to research excellent mechanical product.

show abstract

Section: Proposed Comprehensive Methods For Reliability Allocationmentioning

confidence: 99%

A Comprehensive Method of Apportioning Reliability Goals for New Product of Hydraulic Excavator

Liu

Zeng

Wan

et al. 2019

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…The authors through the analysis of an excavator for a period of 9 years found that the maintenance cost was the most significant contributor to LCC. (Dašić et al, 2015) used weibull distribution to ascertain the reliability and mean time to work without failure of hydraulic system of an excavator. Authors using goodness of fit tests concluded that the greatest agreement with experimental data is with weibull distribution.…”

Section: Introductionmentioning

confidence: 99%

Reliability Analysis and Life Cycle Cost Optimization of Hydraulic Excavator

Mishra,

Goyal,

Mukherjee

2024

JRSS

View full text Add to dashboard Cite

This study focuses on conducting a reliability analysis of an excavator from its field failure data and improve its reliability cost effectively. The aim of the research is to perform reliability estimation of systems and identify the critical subsystem with significant contributions to system unreliability. The reliability analysis was performed using repairable system data analysis approaches. Life cycle cost (LCC) was estimated for critical subsystems, and it was optimized to select cost effective reliability improvement strategy. The results of the study provide valuable insights into the performance and cost-effectiveness of the excavator and its subsystems, which can assist manufacturers and operators in optimizing their equipment’s reliability, availability while considering the cost implications over the life cycle of the equipment. The results show that the undercarriage has critical contributions to system unreliability. This study attempts deep down reliability analysis of critical undercarriage components for optimal selection of improvement method among feasible alternatives. LCC analysis and its optimization performed on the critical sub-system is expected to help OEM save approx. 15% of LCC. The empirical data used in the paper is based on field data gathered during the operational life of the hydraulic excavator over approx. six years in its Indian operations.

show abstract

Durability Testing and Simulation Analysis of the Tension Spring Assembly of a 20-ton Excavator

Kim

Kwon

et al. 2022

Int. J. Precis. Eng. Manuf.

View full text Add to dashboard Cite

Reliability Analysis of the Hydro-System of Excavator SchRs 800 Using Weibull Distribution

Cited by 4 publications

References 20 publications

A Comprehensive Method of Apportioning Reliability Goals for New Product of Hydraulic Excavator

A Comprehensive Method of Apportioning Reliability Goals for New Product of Hydraulic Excavator

Reliability Analysis and Life Cycle Cost Optimization of Hydraulic Excavator

Durability Testing and Simulation Analysis of the Tension Spring Assembly of a 20-ton Excavator

Contact Info

Product

Resources

About