Booking open for training on the…
Technical Aspects of Bolted Joints
Location: Clayworks Create
Bangalore
September 21st 2022
Email [email protected] to book
Please note delegate numbers are limited to 20.
Introduction to Threaded Fasteners
- Thread terminology.
- Background to modern threads.
- Difference and advantaged of fine / coarse threads.
- Bolt and nut strength property classes.
- The basic profile of metric thread forms.
- Thread tolerancing basics.
- Determination of the stress area of a thread.
Strength of bolts
- Yield, tensile strength and proof load properties.
- Details of common bolting specifications.
- Bolt and nut head markings and identification.
- Nut/bolt combinations, nut strength versus bolt strength.
Basics of Bolt Loading
- Overview of the ways threaded fasteners can fail.
- Fatigue, thread stripping, self-loosening, galling, bolt overloading, hydrogen embrittlement failures.
Torque Tightening
- The relationship between the applied torque and the load in the bolt.
- Example tests showing torque-preload graphs.
- Factors which affect the torque-tension relationship.
- The nut factor method of determining the correct tightening torque.
- Full torque-tension equation to determine the appropriate tightening torque.
- Prevailing torque fasteners, what is the correct torque to use.
- Tests to determine the coefficient of friction of threaded fasteners.
Torque Auditing
- Principles of torque auditing.
- Methods of checking installed torque values.
- Witness marking and torque checking issues.
Self-Loosening of Threaded Fasteners
- Overview of the research into establishing the cause of the self-loosening of threaded fasteners.
- Junker’s theory on self-loosening of fasteners and why fasteners self-loosen.
- Preload decay curves and the effectiveness of various fastener types in resisting vibrational loosening.
- Conclusions from the research and how loosening can be prevented.
COURSE CONTENT BY EXPERT: The course content has been prepared by Dr Bill Eccles (CEng FIMechE BSc PhD) of Bolt Science. Bill has completed over 100+ training courses on the technical aspects of bolting. He has acted as an expert witness in some notable accidents in which bolting issues were the primary cause of failure. Bill has a Doctorate on the phenomenon of self-loosening of threaded fasteners.
TRAINING PRESENTER: The course will be presented by Thomas Llewellyn (CEng, MIMechE, BEng). Thomas’s background is in Motorcycle Design Engineering. Prior to forming a consultancy company (Coexlion Limited) in 2021, he worked as a design engineer. His first 15 years were spent at Triumph Motorcycles in the UK, before he moved to India with his family, initially as head of chassis design in Hero MotoCorp, and then as the senior director of mechanical engineering at Ola Electric. Coexlion is licenced to deliver the Bolt Science training on behalf of Dr Bill Eccles for the Asian region. Thomas has been fully trained by Bill Eccles in the UK on the delivery of the course.
COURSE TIME: 21ST SEPTEMBER – 0900:1800 IST
COURSE LOCATION: Create Campus, 11KM, Bannerghatta Rd, Omkar Nagar, Arekere, Bengaluru, 560076
COURSE FEES: 25,000 INR per person. Lunch and Refreshments provided.
ADDITIONAL CONTENT: All Delegates will receive the following:
- Handbook containing additional technical content, example calculations and data tables.
- Remote support is available after the training regarding the example calculations.
- Training Attendance Certificate.
Email now to secure your place.
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