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Tag Archive: Noise in Construction

  1. The Best Noise Reduction Materials for Tractor, Excavator, and Bulldozer Cabs

    May 7, 2020 8:45 pm Leave a Comment

    Excessive noise can severely impact the health and well-being of operators of tractors, excavators, bulldozers, and other large and heavy industrial machines. In addition to serving as a source of stress and distraction in day-to-day activities, it can cause hearing loss and other ear-related conditions over time. One method of reducing the noise levels experienced by machine operators is integrating noise reduction material in and around the operator cab. Below we provide an overview of some of the best noise reduction materials to use in tractor, excavator, and bulldozer cabs.

    bulldozer cab

    Noise Reduction Materials for Headliners

    The term “headliner” refers to the inner roofing component of the cab. If it is left uninsulated, noise passes relatively unobstructed into the operator cab. Adding a noise reduction material—such as perforated vinyl foam—on top of the headliner or between the headliner and outer shell results in less noise entering into and reverberating through the cab. We offer this material in various colors to suit different aesthetic tastes.

    Acoustic and Thermal Treatments for Engine Compartments

    Engine Compartment Bulldozer

    The engine is the biggest contributor to the overall noise levels in an operator cab. The sounds produced are continuous and—when listened to regularly and/or for long periods of time—damaging to auditory health. For this reason, OEMs and end-users may integrate noise reduction materials, such as acoustic absorbers, into their engine compartments.

    In addition to producing noise, the engine generates heat. If left unchecked, it can lead to uncomfortable conditions inside of the cab. For these situations, OEMs and end-users may add thermal insulation (e.g., TechShield) to their engine compartments. These materials ensure cab interiors remain at comfortable temperatures for operators.

    Applications that require acoustic and thermal insulation may benefit from blended materials, such as PF-091. These specialized materials offer both sound absorption and thermal shielding properties.

    Acoustic Floor Mat Treatments

    Floormat-for-cabs

    During industrial machinery operations, sounds and vibrations easily travel into the operator cab through uninsulated floors, especially around the base of the control console. Adding Mass Loaded Vinyl sound barrier floor mats can help both damp noise and block noise from entering. They are designed to reduce the amount of sound transmitted through materials.

    Noise Reduction Solutions From Technicon Acoustics

    The right acoustic solution can reduce the noise levels in the operator cabs of your equipment, which translates to better health and performance in your employees. For all your acoustic insulation needs, turn to the experts at Technicon Acoustics.

    To learn more about our acoustic insulation solutions and how they benefit the heavy machinery industry, visit our Construction and Agricultural Equipment page or contact us today. For assistance choosing a product that suits your needs, request a quote.

  2. Why Is Noise Reduction Necessary in Construction Equipment?

    March 5, 2020 7:13 pm Leave a Comment

    According to a study performed by the American Industrial Hygiene Association in the early 2000s, over 500,000 construction workers are exposed to noise levels that pose a potential risk to their auditory health and well-being. In addition to affecting the working conditions for these workers, the sound produced at construction worksites affects the living quality of the surrounding communities and environments. One of the most significant contributors to these elevated noise levels is the construction equipment employed, such as excavators and bulldozers.

    Escavator

    By implementing noise reduction measures—such as damping foam, acoustic absorbers, and acoustic barriers—in construction equipment, industry professionals may not entirely eliminate noise pollution, but they can reduce sound to more tolerable levels. While these materials are available as aftermarket products, it is much more efficient for original equipment manufacturers (OEMs) of construction equipment to keep in mind acoustic design—including noise reduction—when developing and constructing their products from the beginning.

    At Technicon Acoustics, we have the industry experience and knowledge to deliver high-quality equipment noise reduction and soundproofing solutions to OEMs. By bringing the noise produced by their equipment to more acceptable levels—minimizing the impact on machine operators and the surrounding environment—we improve the marketability of their products, enhance consumer perception, and facilitate compliance with regulatory standards.

    Benefits of Noise Reduction in Construction Equipment

    The integration of noise reduction and soundproofing components in construction equipment translates to significant benefits in the workplace. For example, lower noise levels in construction worksites can lead to:

    • Greater concentration and better communication. Reducing the amount of sound generated by construction equipment enables workers to concentrate and focus on the task at hand without being distracted by equipment noises. Additionally, it facilitates better communication between individual workers during collaborative tasks and/or potentially hazardous situations.
    • Lower rates of error and injury. The greater concentration and better communication achieved in quieter worksites also result in a lower risk of worker error and injury.
    • Reduced worker stress. Sound significantly affects a construction worker’s physical and mental health. Elevated noise levels can lead to hearing loss and other ear-related issues as well as cause emotional stress that results in diminished worker productivity. Lower noise levels in the worksite alleviates these concerns.

    Construction equipment that facilitates these benefits are more appealing to consumers, so it is in the best interest of OEMs to integrate such acoustical solutions in their equipment.

    Using Technicon Products to Reduce Noise

    At Technicon Acoustics, we provide a variety of products to help customers manage the noise produced by their equipment in economical ways, including:

    • Vibration damping, for reducing noise from vibrating metal panels. Panels can be treated with our materials to disrupt the resonant frequency, reduce secondary sound generation, and limit structural vibration. Damping material is extremely light and effective, allowing for the reduction of noise without adding too much weight to the equipment’s components.
    • Acoustic absorbers (Product: Polyether Foam AF-021), commonly used for unwanted noise in engine compartments, this reduces airborne noise by absorbing the sound waves.
    • Acoustic barriers, blocking noise transmission. While absorbers reduce the amount of sound reflecting off a hard surface and spreading through the air, barriers stop sound waves from getting through the material to the other side of an equipment enclosure. Barrier composites are crucial for machine operators as they are placed around the base of control levers to block sound leaks and prevent them from reaching the cab.

    Partnering With Technicon Acoustics for Noise Reduction

    At Technicon Acoustics, we produce solutions for sound reduction and thermal transmission problems. We work with original equipment manufacturers across North America to design, develop, and deliver products that protect consumers from excessive noise and heat transmission.

    For additional information about noise reduction, download our Heavy Equipment Acoustical Treatment eBook. If you need help reducing noise in your new and existing equipment lines, request a quote today.

  3. The Cost of Noise

    September 17, 2018 7:58 pm Leave a Comment

    On average the CDC reports that in 2007, “82% of the cases involving occupational hearing loss were reported among workers in the manufacturing sector” Hearing Loss is the most commonly recorded occupational illness in Manufacturing accounting for 1 in 9 recordable illnesses. It’s estimated, that there are 16 million people working in the Manufacturing Sector, which accounts for approx 13% if the US workforce.

    Hearing loss disability results in an estimated $242 million dollars worth of workers compensation payments each year. According to hear-it.org. As many as 95% of construction workers are exposed to high levels of noise on a daily basis. When left untreated, hearing loss can reduce earnings by as much as $30,000 a year. The top industries that have the most hearing loss claims? Construction, Carpentry, Farmers, and Mining resulting in 30 million work-related injuries each year. The machines that caused the most noise are Jackhammers, Dump trucks, Cement Mixers, Electric Saws. Plant work and Power Stations resulted in 100 DBA ( A-weighted decibels) with Sewer water and Residential Construction sites following behind between 93-99 DBA. *see how to measure noise on a construction site*

    Most will argue that the primary cause for the hearing loss injuries in Manufacturing, Construction, Mining etc is that there’s a lack of educational training on how to prevent Occupational Hearing Loss. According to Mr. Neitzel’s report:

    “Occupational health regulations governing the construction industry, including those pertaining to hearing conservation, are generally less comprehensive than those for the general industry. As a result, health surveillance and prevention programs for chronic diseases such as NIHL are limited in the industry. The US Occupational Safety and Health Administration (OSHA) has two regulations pertaining to hearing conservation in the construction industry. The first… set forth an eight-hour time-weighted average (TWA) permissible exposure limit of 90 dB, and requires a hearing conservation program (HCP) for workers whose exposures exceed this level. The second, [regulation] requires the use of hearing protection devices (HPDs) when noise exposures cannot be reduced below the Permissible Hearing Levels PEL.”

    Source: healthyhearing.com

    See the Story on how poor acoustics affects farmers Source: National Geographic

    How to solve it

    Marine

    Whatever kind of boat you build, your customers will appreciate your efforts to make it quieter. Engine noise, prop cavitations, shaft whirl, all generate noise and create a vibration that can be controlled with the right noise control materials. Here’s our recommendation for a 47″ Trawler Yacht.

    • Engine Room – Use Absorber/Barrier composites. The absorber layer reduces reverberant noise. The barrier layer reduces sound transmission from the engine compartment.
    • Bulkheads – Here, you can also use an absorber and barrier. Either separately or in a composite to reduce reverberant noise and block sound.
    • Hull Structure – Treat hull and deck vibration with proper damping materials.

    How to measure reverberant noise

    Transportation

    Operators of Transportation products such as trucks, buses, trains and emergency vehicles spend their entire day in the vehicle. The major noise sources in a vehicle are the engine, accessories, road and wind noise. Noise can enter the operator and passenger compartments by a variety of paths – through the glass, dash, floor doors etc.

    • Flooring Systems – Road Noise is generated by the vehicles passage over the highway surface and resulting tire and air noise. By using a Barrier Composite you can reduce the impact of road noise on the operator and its passengers.
    • Body Panels – Large surfaces such as floor pans and door panels are prone to vibration. Typically, the greater the surface the greater the noise. Vibration damping materials applied to these surfaces reduce vibration – radiated noise.
    • Hood Liners -These can be manufactured to act both sound absorbers and Heat Shields. They can reduce the reverberant engine noise thus improving both the outdoor environment and the cab interior. They can be made with a protective, heat-resistant facing and sound-absorbent material.

    Heavy Equipment

    Major noise sources in heavy equipment are the engine, drive train and power take-off systems. The sound radiates throughout the environment and affects operators, bystanders, nearby businesses and individuals.

    Read the blog: Tuning into Urban Noise

    • Operator’s Cab- Headliners and sidewall trim systems that incorporate sound absorbers and sound barriers can be used to block sound entering the operator’s compartment and absorb sound reflection from within the operator’s cab. (Contact us to see which facings can be used for functional and aesthetic purposes.
    • Firewall and floormat systems- Firewall composites block sound from the engine and drive train and prevent noise from entering the cab. These can be manufactured either with or without a heat shield component. Sound barriers bounded to a durable wear surface create floormats that reduce sound transmission and improve operator comfort.

    Technicon Acoustics did a case study on measuring and decreasing noise in the cab of a motor grader. Click here to see the results

    Contact Us

    See our list of Solutions and Capabilities at www.techniconacoustics.com and request a consultation with our Sound Solution Sales Team.

Technicon Acoustics, Inc.

Contact us

4412 Republic Court,
Concord, NC 28027 Phone: 704-788-1131
Fax: 704-788-7772

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