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    • Successful manufacturing requires mastery of a critical body of knowledge that includes essential concepts in applied mathematics, measurement and inspection, safety, and quality/lean.

    • Materials are very important to manufacturing and determine how well your application performs. Today, options include metals, ceramics, plastics, and composites, to name a few.

    • Machining best practices are specific to either the task or the device. For grinding, metal-cutting, or work holding, many tools can be used to complete the task.

    • Every workplace requires an understanding of the essential safety practices and topics that help employees to avoid potential hazards.

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3050 – 02 – Knowing Sound vs. Noise

The physical sensation that triggers our sense of hearing is called sound. It exists as an acoustic wave that’s caused by vibration – like a person’s vocal chords. These vibrations ripple through the air, which results in a variation of air pressure. This change is what the ear detects, and what we call sound.
When it comes to metal processing, noise is considered non-essential sound. Sound is divided into long-term noise, like the drone of a fan, or short-term noise, like a party popper.
All sounds or noise – long or short term – can result in hearing loss. Quick, loud sounds, like crashes or explosions, can cause instant hearing loss. But the majority of hearing loss in the workplace is attributed to long-term noise caused by things like manufacturing equipment. Because hearing loss can happen slowly, some workers don’t realize what’s happening to them.

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    In the metal working industry, hearing loss is caused by…

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Class: 3050 - Reduction and Hearing Conservation - 5 Lessons
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