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Innovation
aims to improve worker safety by reducing noise, containing sparks and dust,
and enabling safer abrasive cutting operations across manufacturing and
fabrication industries
Pune: As India's manufacturing and
fabrication sectors continue to expand, workplace safety and occupational
health are becoming increasingly important priorities. Addressing one of the
most common yet overlooked industrial hazards—excessive noise generated during
abrasive cutting operations—researchers from MIT World Peace University
(MIT-WPU) have developed a retrofit technology that could reduce industrial
noise levels by up to 20 dB(A) while simultaneously containing sparks, dust,
and flying debris.
Developed by Dr.
Rohit Raghunath Ghadge, Dr. Mahesh Vasantrao Kulkarni, faculty
members from the Department of Mechanical Engineering at MIT-WPU, and Mr.
Yash Utsahi Chavande, PhD Scholar in Mechanical Engineering, the innovation
takes the form of a compact, machine-mounted protective enclosure that can be
integrated with both existing and new abrasive saw machines.
Unlike
conventional abrasive saws that rely on partial guards offering limited
protection, the newly developed enclosure surrounds the cutting region with a
specially designed housing featuring transparent viewing windows and adjustable
sliding panels. The system allows operators to safely monitor cutting
operations while accommodating different workpiece sizes and maintaining
machine accessibility.
A key
innovation lies in the enclosure's unique design. The structure combines a
rectangular rear section with a curved front profile that helps redirect and
contain sound waves generated during cutting operations. At the same time, it
acts as a protective barrier that helps contain sparks, metallic debris, and
dust, creating a safer and cleaner working environment without requiring large
acoustic cabins or extensive infrastructure modifications.
"Industrial
workplaces are increasingly focusing on worker welfare and occupational health.
Our objective was to develop a compact solution that addresses multiple
workplace challenges simultaneously—noise exposure, flying debris, dust
generation, and operator safety—without requiring large acoustic cabins or
major infrastructure changes," said Dr. Mahesh Vasantrao Kulkarni.
Abrasive saw
machines are widely used across fabrication workshops, construction sites,
manufacturing plants, automotive facilities, railway maintenance units,
shipyards, and engineering industries. However, these machines routinely
generate noise levels ranging from approximately 95 to 110 dB(A), making them
among the noisiest equipment commonly found in industrial environments.
Prolonged exposure to such noise can affect communication, concentration,
worker comfort, and overall workplace safety.
"The
inspiration for this invention came from observing abrasive cutting operations
during workshop and construction-related activities on campus. The noise
generated by these machines was noticeable even at considerable distances,
highlighting the need for a practical solution that could improve workplace
conditions without affecting machine accessibility or productivity," said Dr.
Rohit Raghunath Ghadge.
To enhance
the enclosure's acoustic performance, the research team evaluated advanced
hybrid acoustic materials comprising E-glass fibre, basalt fibre, and
perforated aluminium layers. Laboratory testing conducted in accordance with
ASTM E1050-19 standards demonstrated sound absorption coefficients as high as
0.98 and sound transmission loss values of up to 30 dB(A) within frequency
ranges commonly associated with industrial machinery noise.
Based on
these material-level findings and the enclosure's noise-containment design, the
researchers anticipate practical noise reduction of approximately 10–20 dB(A)
once prototype testing is completed under actual operating conditions. Even a
reduction within this range can significantly improve workplace comfort and
reduce worker exposure to high noise levels during abrasive cutting operations.
Beyond noise
reduction, the enclosure is designed to support broader occupational health and
safety goals by limiting the escape of sparks, metallic particles, and dust
generated during abrasive cutting processes. This can help create cleaner
workspaces, improve operator protection, and reduce exposure to common
workplace hazards.
The
technology's retrofit-friendly design enhances its commercial potential,
allowing industries to upgrade existing abrasive saw machines without major
infrastructure investments. Its compact and portable configuration also makes
it suitable for both permanent workshop installations and temporary fabrication
or construction sites where equipment is frequently relocated.
The
innovation could benefit a wide range of sectors, including metal fabrication,
manufacturing, construction, automotive production, railway maintenance,
shipbuilding, steel processing, and general engineering workshops. It may be
particularly valuable in environments where workshops operate close to offices,
laboratories, educational facilities, or other occupied spaces where noise
control is critical.
The patent
application for the invention has been filed and published, and the technology
is currently in the prototype development stage. Following successful
validation and field testing, the researchers see strong potential for
commercialization as both a retrofit solution for existing machines and an
integrated feature in future abrasive saw systems.
"Effective
noise control and workplace safety do not necessarily require large, expensive
infrastructure changes. By addressing noise, sparks, dust, and debris directly
at the source, compact engineering solutions like this can help industries
create safer, healthier, and more productive work environments while supporting
the broader goal of worker-centric manufacturing," said Mr. Yash Utsahi
Chavande.
The
researchers believe widespread adoption of such technologies could contribute
significantly to improving occupational safety standards across manufacturing,
fabrication, construction, automotive, railway, and engineering sectors while
supporting India's transition towards safer, healthier, and more sustainable
industrial workplaces.