Vignesh Jayakumar

21 Flips | 1 Magazine | 3 Following | 9 Followers | @viguj7 | Keep up with Vignesh Jayakumar on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Vignesh Jayakumar”

Fault Diagnosis of Beam-Like Structure Using Modified Fuzzy Technique

This paper presents a novel hybrid fuzzy logic based artificial intelligence (AI) technique applicable to diagnosis of the crack parameters in a …

Analytical and Numerical Investigation of Lacing Wire Damage Induced Mistuning in Turbine Blade Packet

Investigations of modal parameters for a mistuned packet of turbine blades due to lacing wire damage are reported using analytical and numerical …

7 Amazing Things You Can Do With Sound Waves

Sound can identify the contents of homemade bombs, measure the temperature in a nuclear reactor, and even perform brain surgery.<p>Sound can identify the contents of homemade bombs, measure the temperature in a nuclear reactor, and even perform brain surgery.

Engineering

Music & Noise

The foundation of music is the musical note: a combination of pitch (the musical word for frequency) and duration (the ordinary word for amount of …

Infographic: How Speakers Work, In One Killer GIF

From the tiny speakers in our iPhones to the massive amps at a heavy metal conference, there are many different types of speakers in the world, but they all use the same basic acoustic principles to fill our world with music. If you’ve ever wondered how they work, this incredible animated …

Infographics

In Situ Measurement of Discomfort Curves for Seated Subjects in a Car on the Four-Post Rig

Abstract<p>The aim of this study is to measure and quantify perceived intensity of discomfort due to vibration in a vehicle <i>in situ</i> considering complete …

Prediction of Vibrational Behavior of Grid-Stiffened Cylindrical Shells

Abstract<p>A unified analytical approach is applied to investigate the vibrational behavior of grid-stiffened cylindrical shells with different boundary …

The Effect of Perforation on the Dynamics of a Flexible Panel

Introduction of holes into plate-like structures is commonly found as one of the practical noise control measures to reduce sound radiation. However, …

Free Vibrations of a Series of Beams Connected by Viscoelastic Layers

Abstract<p>An exact solution for free vibrations of a series of uniform Euler-Bernoulli beams connected by Kelvin-Voigt is developed. The beams have the …

A New Methodology for Quantifying Acoustic Wavefronts on Clustered Rocket Nozzles

When: Fri Apr 10, 2015 4pm to 5pm CDT<br>Event Status: confirmed<br>Event Description: Andres Canchero Department of Aerospace Engineering and Engineering …

The Physics of Engine Notes, Or: Why a Toyota V-6 and Porsche Flat-Six Sound So Different

The science of engine sounds.<p>From the January 2015 issue of <b>Car and Driver</b><p>What separates a Porsche flat-six from a Toyota Avalon V-6—aside from the bank angle, the power output, the engine location, and your interest in owning one? At full throttle, the Porsche belts out an aggressive mechanical …

The Impact of a Poorly Isolated Floor

Do you need an IIC test?<p>Do your tenants complain of hearing their neighbors above? Does your old building meet modern building codes for sound …

The Effect of Uncertainty in the Excitation on the Vibration Input Power to a Structure

Abstract<p>In structural dynamic systems, there is inevitable uncertainty in the input power from a source to a receiver. Apart from the …

Autocorrelation Analysis in Time and Frequency Domains for Passive Structural Diagnostics

Abstract<p>In this paper, modal frequency estimation by using autocorrelation functions in both the time and frequency domains for structural …

Optimization of Natural Frequencies and Sound Power of Beams Using Functionally Graded Material

Abstract<p>This paper presents a design method to optimize the material distribution of functionally graded beams with respect to some vibration and …

Experimental Study for Vibration Behaviors of Locally Defective Deep Groove Ball Bearings under Dynamic Radial Load

Abstract<p>Rolling element bearings are used in many mechanical systems at the revolute joints for sustaining the dynamic loads. Thus, the reliable and …

Vibration Analysis of Hollow Tapered Shaft Rotor

Abstract<p>Shafts or circular cross-section beams are important parts of rotating systems and their geometries play important role in rotor dynamics. …

The Sound of an Atom has Been Captured

The interaction between atoms and light is well known and has been studied extensively in the field of quantum optics. However, to achieve the same …

Mechanism of sonoluminescence

Sonoluminescence is a phenomenon that occurs when a small gas bubble is acoustically suspended and periodically driven in a liquid solution at …

The Importance of 432Hz Music

Article By: Brian T Collins<p>Can the current international concert pitch of music somehow be improved to create a more resonant and pleasant positive …

Rock & Roll