Blade crack is one of the most common blade failures of rotating machines which may lead
to catastrophic accidents. Although many nonlinear vibrations of breathing crack have been …

In aero-engines, the blades are exposed to severe environments and subjected to complex
conditions, which can cause damage and cracks. Existing analytical models focus primarily …

Condition monitoring is crucial for a rotating blade working in harsh conditions. Blade tip
timing (BTT) is a potential technique for operational blade health monitoring owing to its non …

Rotating blades are functional and weak components with a high failure risk, which affects
the working ability and operation safety of turbomachinery. Therefore, it is significant to …

Multiple signal classification (MUSIC) has gained prominence in frequency estimation with
the virtue of overcoming the undersampling problem of blade tip timing (BTT). However, as a …

Abstract Blade Tip Timing (BTT) technology is concerned with the estimation of
turbomachinery blade stresses. The stresses are determined from BTT data by relating the …

Blade tip timing (BTT) is a potential non-contact vibration measurement technique for
rotating blades owing to its high efficiency and long service life. However, probe layout …

This paper presents an analysis of nonsynchronous rotor blade vibrations in the last stage of
an LP steam turbine at various condenser pressures. The nonlinear least squares …

Blade-health monitoring is intensely required for turbomachinery because of the high failure
risk of rotating blades. Blade-Tip Timing (BTT) is considered as the most promising …

Natural frequency is an essential parameter for rotating blade condition monitoring. Various
previous simulations and experiments have shown that multiple signal classification …