Physical and Numerical Investigations of Gas Turbine Blades Failure
Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
View: 405
This Paper With 10 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JEFM-1-2_008
تاریخ نمایه سازی: 25 تیر 1398
Abstract:
Two blade samples from the first and second stages of a gas turbine were investigated to understand the reason of fracture. All samples suffered excessive heat superficially. Using a TBC layer on top of Diffusion coating will be a reasonable solution for protecting the blades. Although in case of the first stage blades cracking was postponed, the thermomechanical fatigue cracks still originated from the blade surface. It was observed that the damage of the thermal barrier coating layer would lead to the overheating of the blades, promoting the rate of creep and rafting of g¢ precipitates. This phenomenon was more severe in the second stage samples with more damaged protective layers. It was found that the chemical composition of the fuel gas may increase the potential and rate of corrosion and damage to the blades. Concurrent with physical investigation, numerical simulation was performed to study the effect of particle impact into the blade. By changing the particle radii and its position, damage area was inspected. Numerical simulation shows that particle radii and its position have an important effect on the chipping removal from the blade.
Keywords:
Authors
H.R. Faridi
Department of Materials Science and Engineering, Hamadan University of Technology, Hamadan, Iran.
A. Momeni
Department of Materials Science and Engineering, Hamadan University of Technology, Hamadan, Iran.
M. Mohammadpour
Department of Materials Science and Engineering, Hamadan University of Technology, Hamadan, Iran.
V. Sarfarazi
Department of Mining Engineering, Hamadan University of Technology, Hamadan, Iran.
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :