INVESTIGATION OF VIBRATION BASED FAULT DETECTION METHODS FOR SPINDLE BEARINGS

Download

10514445.pdf

Date

2022-12

Author

Karakaş, Mert

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

133
views

211
downloads

Spindles are hearth of the CNC lathes and condition of them are critical for the industry. In this thesis, effects of bearing defect on spindles are investigated and condition of spindles are determined using vibration data collected at working conditions. After a comprehensive literature survey, a bearing model including effects of defects is constructed. Afterwards, a finite element model of a spindle is created, and outputs of the bearing model are used as inputs for the FEM. Using the model, effects of bearing defects on point FRF of spindle and tool point FRF are observed. Results are compared with the experiment done on a spindle before and after maintenance. In addition, vibration data measured from five different spindles at different working conditions are analyzed in detail for detecting bearing defects alongside with the common shaft faults.

Subject Keywords

Fault Detection, Condition Monitoring, Bearing Defect

URI

https://hdl.handle.net/11511/101288

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Analyzing the Effects of Inventory Cost Setting Rules in a Disassembly and Recovery Environment Akcali, Elif; Bayındır, Zeynep Pelin (null; 2005-10-15) We consider a salvaging facility that satisfies the demand for remanufactured parts that can be recovered from the end-of-life products. One of the difficulties faced in planning for such a system is the determination of the opportunity cost associated with carrying recovered parts inventory. In this study we investigate the effect of different rules to determine this opportunity cost on the performance of the system. The performance of several different rules is assessed by a computational study under a pr...
USAGE OF FUZZY MULTI CRITERIA DECISION MAKING METHODS IN SELECTION OF NONTRADITIONAL MANUFACTURING METHODS Kul, Yavuz; Seker, Alper; YURDAKUL, MUSTAFA (2014-01-01) New manufacturing technologies such as nontraditional manufacturing methods (NMM) were needed recently because of new machining requirements for parts with complex geometries, very narrow machining area and high strength materials and also for very small and delicate parts. Since NMM are diverse and their numbers are increasing with the development of new approaches, selecting the most appropriate one among many NMM requires systematic models which incorporate multi-criteria decision making approaches. In t...
Analysis and preform design for long press forgings with non-planar parting surfaces Karagözler, Ahmet Barış; Gökler, Mustafa İlhan; Darendeliler, Haluk; Department of Mechanical Engineering (2003) In industry, a wide variety of parts are produced by press forging. Press forging generally requires sequential forming of workpieces through a set of preforming stages before the final stage. The design of preform dies affects die and product cost and quality. To ensure complete filling of the die at the final stage, companies in the forging industry commonly add extra material to the original workpiece volume and accordingly design the perform dies by the help of their experience. However, this method ref...
Determination of cracking related properties of engineering cementitious composites Keskin, Süleyman Bahadır; Şahmaran, Mustafa; Yaman, İsmail Özgür (null; 2017-09-12) Engineered Cementitious Composites (ECC) are relatively new types of fiber reinforced cementitious materials with enhanced mechanical properties such as tensile strain hardening accompanying high tensile strain capacity. This is mainly attributed to close and multiple cracks with widths remaining under 60 µm which contributes to durability of ECC material. These properties are only achievable as a result of a micro-mechanical design that requires special ingredients that make ECC costly to be used alone, ho...
Development of a new hesitant fuzzy ranking model for NTMP ranking problem ATALAY, KUMRU DİDEM; İÇ, YUSUF TANSEL; KEÇECİ, BARIŞ; YURDAKUL, MUSTAFA; Boran, Melis (2021-10-01) Nontraditional manufacturing processes (NTMPs) bring the processing capabilities such as machining high strength and hard materials with desired accuracies and surface finish to the manufacturing companies. Therefore, there has been a significant increase in the use and number of NTMPs. Hence, choosing a particular NTMP for a specific application turns out to be a complex decision-making problem, which involves conflicting qualitative and quantitative ranking criteria. In recent NTMP ranking literature, it ...

Citation Formats

M. Karakaş, “INVESTIGATION OF VIBRATION BASED FAULT DETECTION METHODS FOR SPINDLE BEARINGS,” M.S. - Master of Science, Middle East Technical University, 2022.