Essays about: "structural attenuation"

Found 5 essays containing the words structural attenuation.

  1. 1. Simulation of Mechanical Shock with Finite Element Analysis and Estimation of Shock Attenuation

    University essay from KTH/Hållfasthetslära

    Author : Cheng Qian; [2021]
    Keywords : shock; SRS; FEA; attenuation; chock; SRS; FEA; chockdämpning;

    Abstract : Space equipment is often subjected to mechanical shocks. Some devices like electronics are sensitive to shocks, and they can easily be damaged. To protect these devices, it is important to study shock penetrations in space structures. The Finite Element Method is an effective tool to simulate response to transient excitations. READ MORE

  3. 2. Reconstruction Approach for Partially Truncated CT Data

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Krishnadev Moothandassery Ramdevan; [2018]
    Keywords : partially truncated; partial CT reconstruction;

    Abstract : For various reasons it might be required to scan an object that partially lies outside the field of view(FOV) of a CT scanner. The parts of the object that lie outside the FOV will not contribute to the line integrals measured by the detector which will cause image artifacts that affect the final image quality. READ MORE

  4. 3. Simulation and study of passive shunt damping of a composite plate by embedded PZT transducers

    University essay from KTH/Lättkonstruktioner

    Author : Robert Jansson; [2016]
    Keywords : ;

    Abstract : This report investigates the possibility of simulating a fiber composite plate with embedded piezoelectric transducers connected to shunt circuits in order to control vibration. The simulation model is validated in steps of discipline, both analytic and experimentally. READ MORE

  5. 4. Semi-Analytical Finite Element method for guided waves in civil engineering plate-like structures

    University essay from Lunds universitet/Teknisk geologi; Lunds universitet/Väg- och vattenbyggnad (CI)

    Author : Christian Nielsen; [2015]
    Keywords : seismics; structural health monitoring; lamb waves; SAFE; semi analytical finite element; wave guide finite element; non destructive testing; civil engineering; ultrasound; ultrasonography; comsol; wave guide; plate; Technology and Engineering;

    Abstract : Guided waves have a signicant potential for Structural Health Monitoring (SHM) and Non-Destructive Testing (NDT) due to their relatively long distance of propagation and sensitivity to discontinuities along the propagation path, anywhere through the material thickness. The inability to model wave guides of arbitrary cross-section using current matrix methods, has led to the development of a technique called Semi-Analytical Finite Element (SAFE). READ MORE

  6. 5. Image Theory Applied to virtual Microphones

    University essay from Blekinge Tekniska Högskola/Avdelningen för signalbehandling

    Author : Carlos Hernandez Matas and Diana Gomez Olmedilla; [2008]
    Keywords : acoustics; image theory; geometry; reverberation;

    Abstract : Virtual sensing is the art of measuring a quantity at a certain spatial position without having a physical sensor placed at that exact same position. In practical applications, this technique is sometimes very useful, when it is not feasible to put the sensor at the position where the physical quantity should be measured. READ MORE