acoustic insulation Articles

  • Rolling machine enclosure case study

    Process details Rolling machine used to manufacture exercise books for schools Supply Acoustic enclosure 7.7m long x 6.5m wide x 3m high Special requirements Unit designed to allow very easy access and numerous cutouts/feed chutes while maintaining an excellent acoustic performance. Performance ...


    By Wakefield Acoustics Ltd

  • The mills grind efficiently

    The – “Milser Mühle“ – has relied on AERZEN for 50 years When the Borgstedt Family took over the Milser Mühle 130 years ago, at first, it only produced feed material, and then, from 1918, it started to produce flour for human food. “Therefore we selected oilfree compressing AERZEN Positive Displacement Blowers of series GM as conveying air producer ...

  • What is asbestos?

    Asbestos is the name for a group of naturally occurring silicate minerals that can be separated into fibers. The fibers are strong, durable, and resistant to heat and fire. They are also long, thin and flexible, so that they can even be woven into cloth. ...

  • WKC Case Study - Knowledge Sharing with Petronas

    WKC delivers a workshop on assessment methods for the evaluation of Acoustically & Flow Induced Vibration Training Invitation As a leading provider of AIV & FIV assesments for the oil & gas and petrochemical sectors, WKC was invited to provide training for a company in Kuala Lumpar designed for Project, Process & Mechanical Engineers from who are ...


    By WKC Group

  • Quarry crusher control

    Summary Pulsar supplied Level Star non-contacting ultrasonic level measurement to Croft quarry in Leicestershire to controlstone level in choke-fed tertiary crushers The Level Star provides relay closures to control the automatic feed to the crusher, maintaining the optimum level inthe crusher bowl to maximise production efficiency and consistency of stone size. The ...

  • Case study of acoustic mapping of international transportation route and its effect on the local community

    The Windsor-Detroit border crossing is a gateway for North-American goods coming to and from Canada and the US.  It is the largest border crossing in Canada and relies heavily on the smooth operation of the Ambassador Bridge.  Huron Chruch Road is the main transportation route leading to the Ambassador Bridge, which sees on average 32,000 vehicals cross daily and at times as many ...

  • ZE: 908 Acoustic Interface - The simple way to integrate noise measurements in industrial settings

    The ZE: 908 allows users to add a noise measurement capability to an existing process control system. The ZE:908 is a small, lightweight power supply and acoustic conditioning unit for microphone preamplifiers, it is ideal as a front-end for data logging and analysis systems where a simple and accurate acoustic input is required as an interface between an acoustic transducer and a process ...


    By Cirrus Research plc

  • A numerical structural-acoustic approach to analysis of interior booming noise and noise reduction in an all-terrain tractor cabin

    The booming noise in an all-terrain tractor cabin is studied in this research via a numerical structural-acoustic approach. Cavity acoustic resonances of the cabin are evaluated, and the acoustic resonant frequencies are identified and quantified in the research. The noise level inside the cabin is determined, and the frequencies characterised by peak noise levels within the booming noise ...


    By Inderscience Publishers

  • Acoustic camera and beampattern

    Abstract—The wavenumber-frequency response of an array describes the response to an arbitrary plane wave both in time and space. When the input consists of a single monochromatic plane wave, the response of the array is referred to as the array pattern or beampattern. Through the design of the array our goal is to have a directivity of the array as high as possible in a given direction, ...


    By Norsonic AS

  • Statistical quality control of streamflow measurements with moving-boat acoustic Doppler current profilers

    This technical note presents a new methodology for the statistical quality control of streamflow measurements with moving-boat acoustic Doppler current profilers. The methodology consists of two alternative acceptance criteria: uncertainty-based and residual-based. The former uses the uncertainty and the latter uses the maximum residual as a measurement quality indicator. Application examples are ...


    By Teledyne RD Instruments

  • Acoustic Louvres for Compressor Room case study

    Process details Air and gas compressor room Supply Bank of acoustic louvres 8m wide x 3m high supplied as 4x 1.25m modules. Product selection Acoustic louvres were chosen as the best solution to provide an air volume in the compressor room of 62,000m²/hr while not increasing noise levels in the surrounding areas. ...


    By Wakefield Acoustics Ltd

  • Vibro-acoustic analysis of composite circular disc with various orthotropic properties under thermal environment

    Composite circular discs with polar orthotropic and rectangular orthotropic fibres of different composite materials are modelled and their vibration response due to harmonic point load under thermal environment was computed by Finite Element Method (FEM) using ANSYS. Acoustic response of composite circular disc was computed by coupling the vibration data from FEM to the Boundary Element Method ...


    By Inderscience Publishers

  • Prediction of noise from track systems

    A practical approach is presented for the prediction of noise level generated by a track system at the design stage of a tracked vehicle. Rayleigh's surface integral is adopted for relating the acceleration of a track link chain in the time-domain to the radiated acoustic pressure of the exterior noise. The sound pressure levels of the noise generated by the vibrating track system are calculated ...


    By Inderscience Publishers

  • Level Measurement Problems crushed

    Pulsar non-contacting ultrasonic level measurement equipment copes even with the harshest and noisiest conditions, as this case study looking at stone crusher level measurement proves. Pulsar supplied Level Star non-contacting ultrasonic level measurement to Croft quarry in Leicestershire to control stone level in choke-fed tertiary crushers. The Level Star provides relay closures to control the ...

  • Elastic sound absorption theory of fibrous material

    Because of the complexity of classical sound absorption theory's expressions, it is difficult to obtain physical insight into the acoustic behaviour of porous materials and to determine the dominant mechanism for sound absorption for a given material at a given frequency. Alternatively, there are very simple expressions. A new theory has been put forward that fibrous material absorbs sound by the ...


    By Inderscience Publishers

  • Structural acoustic modelling of three dimensional enclosed sound fields with active/passive piezoelectric networks

    In this paper, analytical effort for modelling piezoelectric-structural acoustic interactions of sound transmission through a flexible smart panel into an enclosure is presented. A spherical wave is transmitted into a rectangular enclosure through a flexible panel, while piezoelectric patches, bonded on the panel, are used as actuators and /or passive dampers. The developed model accounts for ...


    By Inderscience Publishers

  • Enclosure for small laboratory equipment case study

    Process Details Large cryogenic mill designed for cryogenic grinding and pulverising tough and temperature sensitive samples immersed in liquid nitrogen. Supply Stainless steel desktop acoustic enclosure 760mm wide x 720mm deep x 710mm high Product selection Enclosure needed to be lockable, able to collect ...


    By Wakefield Acoustics Ltd

  • Short-term noise monitoring with Delta Acoustics case study

    Noise monitoring does not require a large amount of expertise or investment in expensive equipment. DELTA learned how measurement projects with high technology demands could easily be solved with a Noise Sentinel On Demand subscription. Challenge Demands for quick calculation validations on noise measurements that had to comply with strict ISO regulations ...

  • Vibro-acoustic analysis of functionally graded circular discs under thermal environment

    A circular disc made up of Functionally Graded Material (FGM) with several cases of FGM index are modelled and their vibration response to a harmonic point load in a thermal environment with temperature dependant material properties was computed by using the Finite Element Method (FEM). A macro was developed by the corresponding author in ANSYS Parametric Design Language for modelling FGM using ...


    By Inderscience Publishers

  • Dynamic blast compaction of some granular materials: small-scale tests and numerical modelling of a mining-related problem

    Sub-Level Caving (SLC) is an important mass mining method, involving blasting of ore against granular material in the form of caving debris. The debris compaction due to blasting influences the caving process. Blasting tests were made on cylinders of magnetic mortar placed inside plastic cylinders and confined by packed granular material. By introducing the acoustic impedance between the mortar ...


    By Inderscience Publishers

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