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5. Dry Friction (Sliding Friction)

Module 5 of the Surface Texture and Tribology Short Course
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8.6

CourseMarks Score®

9.4

Freshness

N/A

Feedback

7.4

Content

Platform: Udemy
Video: 1h 43m
Language: English
Next start: On Demand

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CourseMarks Score®

8.6 / 10

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Freshness Score

9.4 / 10
This course was last updated on 10/2021.

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Content Score

7.4 / 10
Video Score: 7.8 / 10
The course includes 1h 43m video content. Courses with more videos usually have a higher average rating. We have found that the sweet spot is 16 hours of video, which is long enough to teach a topic comprehensively, but not overwhelming. Courses over 16 hours of video gets the maximum score.
The average video length is 3 hours 21 minutes of 306 Physics courses on Udemy.
Detail Score: 8.9 / 10

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Extra Content Score: 5.5 / 10

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Table of contents

Description

Friction is a complex subject that we have broken up into multiple modules in this course. Understanding friction is critical in wide-ranging applications, from automotive and aerospace, to rock climbing and curling. In many cases we try to minimize friction (to improve engine performance, for example), but in other cases a high degree of friction is essential (in brake systems, for example). The concepts have been studied since antiquity, and we continue to invest a great deal of effort and resources to understand and control friction today.
The first case we discuss is the simplest: dry friction, which occurs in systems without lubrication. In this module we discuss the basic mechanisms and physics of dry friction, and the methods we use to measure it. We look at the relationships between surface texture (surface roughness) and dry friction, introducing the concept of “real contact,” the actual meeting points of two interacting surfaces. Finally, we revisit some of the surface texture parameters that we discussed in previous modules and show how they relate to, and change with, dry friction.
Following this module we encourage you to watch the next modules on Lubricated Friction and Rolling Friction for a more complete view of friction.
Module 5 of the Surface Texture and Tribology Short Course. The full course is available on udemy, or you can select the individual course modules of interest to you. Enter “surface roughness texture tribology” in the udemy search bar to browse the full course and modules.

You will learn

✓ The mechanisms of friction in non-lubricated systems
✓ Measuring friction and parameters for quantifying friction
✓ How surface texture relates to friction
✓ The “area of real contact”
✓ Plastic and elastic deformation

Requirements

• No prerequisites. This module is part of the Surface Texture and Tribology Short Course, so viewing Modules 1–3 is recommended.

This course is for

• Scientists, engineers, technicians and students in the fields of automotive, medical device, aerospace, materials, polymers, and others

How much does the 5. Dry Friction (Sliding Friction) course cost? Is it worth it?

The course costs $29.99.
The average price is $13.4 of 306 Physics courses. So this course is 124% more expensive than the average Physics course on Udemy.

Does the 5. Dry Friction (Sliding Friction) course have a money back guarantee or refund policy?

YES, 5. Dry Friction (Sliding Friction) has a 30-day money back guarantee. The 30-day refund policy is designed to allow students to study without risk.

Are there any SCHOLARSHIPS for this course?

At the moment we could not find an available scholarship for 5. Dry Friction (Sliding Friction).

Who is the instructor? Is Donald Cohen a SCAM or a TRUSTED instructor?

Donald Cohen has created 11 courses that got 41 reviews which are generally positive. Donald Cohen has taught 663 students and received a 4.8 average review out of 41 reviews. Depending on the information available, Donald Cohen is a TRUSTED instructor.
Surface Metrology/Tribology
In 1994, Dr. Cohen established Michigan Metrology to help engineers and scientists solve problems related to “Squeaks, leaks, friction, wear, appearance, adhesion and other issues,” using 3D Surface MicroTexture Measurement and Analysis.
Dr. Cohen is a past Chairman of the STLE-Detroit section and has been active with the ASME B46.1 committee on surface texture since 1988, having served as Chair from 2005-2011. Dr. Cohen is also a Subject Matter Expert for the ISO surface metrology activities.
Dr. Cohen has an undergraduate degree in Physics from the University of Michigan, Dearborn, and graduate degrees in Physics and Optical Sciences from the University of Arizona. Early in his career, Dr. Cohen worked with IBM on optical disk drive development. He later joined WYKO Corporation as Product Manger and later became Vice President, leading the development of 3D surface texture metrology instrumentation.
Dr. Cohen has developed this class over the past 20 years having presented the material at numerous client locations as part of his training and consulting activities. Typically once a year the class is offered to a general audience in the Livonia, MI area.

8.6

CourseMarks Score®

9.4

Freshness

N/A

Feedback

7.4

Content

Platform: Udemy
Video: 1h 43m
Language: English
Next start: On Demand

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