Self-excited vibration of the tool, regenerative chatter, can be predicted and eliminated if the stability lobe diagram of the spindle–holder–tool assembly is known. Regardless of the approach being used, analytically or numerically, forming the stability lobe diagram of an assembly implies knowing the point frequency response function (FRF) in receptance form at the tool tip. In this paper, it...

It is necessary to utilize special techniques of separating submicron-size particles from other micron-size particles such as hydrocyclone and liquid-liquid separating. In this experimental work, separation of TiO2 and Al(OH)3 artificial mixture was investigated. Separation of submicron TiO2 particles from micron Al(OH)3 particles was carried out using a column bed filled with plastic fiber tub...

This paper develops and implements a multi-factor, Markov chain model for bond rating migrations and credit spreads. The building blocks are historical transition matrixes and a set of latent credit cycle variables. The model’s central feature is for transition matrixes to be time-varying, and driven by rating-specific latent variables which encompass such economic factors as the business cycle...

The Fractional Frequency Reuse (FFR) scheme combines the benefits of universal Frequency Reuse and Frequency Reuse Factor (FRF)3. Universal Frequency Reuse scheme has high spectral efficiency while FRF=3 scheme is normally used to mitigate Intercell Interference (ICI) in a cellular system. Nevertheless, the advancement of the wireless technology does not stop here. The trend of Long Term Evolut...

Based on the inverse approach and finite element method, quality of a reconstructed signal is discussed in this work. The responses caused by distributed impact portion composite structure can be recovered using dynamic analysis. thought to complex made up two different-sized plates different materials. robustness inversion method was studied, as well sensitivity numerical compared modal trunca...

In modern vehicle development, suspension components have to meet many boundary conditions. noise, vibration, and harshness (NVH) development these are for example eigenfrequencies frequency response function (FRF) amplitudes. Component geometry parameters, kinematic hard points, often affect multiple of targets in a non intuitive way. this article, we present practical approach find optimized ...

This work is of multidisciplinary concept, whose development difficult to perform. Considering also that, in one the steps, similarity between FRF vibration and acoustic signal demonstrated. The objective this analysis prognosis progression failures a pair gears using artificial immune system (AIS) negative selection. In order have condition met, during work, Wiener filter technique, (FRF), app...

This paper aims to assess the effect of input uncertainty on FRF predictions obtained with Finite Element analysis. The Transformation Method (TM), presented by M. Hanss, uses a fuzzy approach based on interval arithmetic: the uncertain response is reconstructed from a set of deterministic responses, combining the extrema of each interval in every possible way. The TM is applicable if the outpu...

The photolytic degradation of decabromodiphenyl ethane (DBDPE), an alternative flame retardant to decabromodiphenyl ether, was investigated in a variety of matrixes (n-hexane, tetrahydrofuran, methanol/water, humic acid/water, and silica gel) by irradiation under ultraviolet light and in n-hexane under natural light. Photolytic degradation of DBDPE occurs in all the matrixes investigated within...