why choose adhesives over traditional fasteners?
DESCRIPTION
This webinar discusses the latest advances in structural adhesives for a range of design, manufacturing, and assembly applications. It includes an evaluation of fastening technologies, such as “instant” assembly methods using thermal joining, mechanical fastening, and tapes, as well as the benefits of new structural liquid adhesives. It offers insight into the role of the converter in the design process, from testing and materials and adhesive selection, to fabrication, manufacturing and assembly. The webinar covers: · The benefits and considerations of structural adhesives vs. alternative methods · Strength and cost data for structural adhesives vs. mechanical fasteners, welding, and acrylic foam tapes · Joint design guidelines · Real life examples of structural adhesives in actionTRANSCRIPT
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Why choose adhesives over traditional fasteners?
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This webinar will be available afterwards at
www.designworldonline.com & email
Q&A at the end of the presentation
Hashtag for this webinar: #WhyAdhesives
Before We Start
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Moderator
Leslie Langnau Design World
Presenter
Brian Noonan Henkel
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Why choose adhesives over
traditional fasteners?
Brian Noonan, Global Technology Manager – Structurals
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Agenda
• Why Brian…Why Loctite®?
• Why use adhesives?
• Structural Bonding Economics
• Proper Joint Design
• Real life examples
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Why Brian?
o Application Engineering – 4 years
o Market Development – 4 years
o Global Technology Management, Structurals
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Why LOCTITE®?
• Trusted industry innovator since 1956
• Henkel is the largest adhesives company in the world
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Introduction to Bonding
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Why Use Adhesives
• Benefits o Join Dissimilar Substrates
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• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
Why Use Adhesives
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Visit www.henkelna.com/loctitestructurals to view full video
• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
Why Use Adhesives
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• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
Why Use Adhesives
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Why Use Adhesives
• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
o Seals Joint
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Why Use Adhesives
• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
o Seal, Bond & Protect
o Neat Appearance
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Why Use Adhesives
• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
o Seal, Bond & Protect
o Neat Appearance
o Easily Automated
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Why Use Adhesives
• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
o Seal, Bond & Protect
o Neat Appearance
o Easily Automated
• Considerations o Must be Cured
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Why Use Adhesives
• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
o Seal and Bond
o Neat Appearance
o Easily Automated
• Considerations o Must be Cured
o Fixture Time
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Why Use Adhesives
• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
o Seal and Bond
o Neat Appearance
o Easily Automated
• Considerations o Must be Cured
o Fixture Time
o Can be Messy
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Why Use Adhesives
• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
o Seal and Bond
o Neat Appearance
o Easily Automated
• Considerations o Must be Cured
o Fixture Time
o Can be Messy
o Proper Handling
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• Benefits o Join Dissimilar Substrates
o Distribute Stresses Evenly
o Fill Large Gaps
o Seal and Bond
o Neat Appearance
o Easily Automated
• Considerations o Must be Cured
o Fixture Time
o Can be Messy
o Proper Handling
o Potentially difficult to Disassemble
Why Use Adhesives
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Why Use Adhesives…
TO SAVE MONEY
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Mechanical Fastening Methods
Use of structural bonding adhesives offer lower
costs, improved reliability and more design flexibility
over traditional assembly methods.
Welding
Riveting Fastening
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Mechanical Fastening
Pros
• Welds
o Instant Full Strength
o Very Strong
• Mechanical Fasteners
o Instant Strength
o Known Method
• Tape
o Instant Fixture
Cons
• Welds
o Labor Intensive (Costly)
o Substrate Distortion
o Can’t Weld Dissimilar Metals
o Galvanic Corrosion
• Mechanical Fasteners
o Vibrational Loosening
o Not Sealed
o Adds Weight
o Labor Intensive
o Not Aesthetically Pleasing
• Tape
o Sensitive to Contamination
o Low Strength
o Not Adjustable
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Strength vs. Cost
Note: 1-inch overlap joints for adhesives and double-sided tape
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Fatigue Testing
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Cost Driver - Labor
Visit www.henkelna.com/loctitestructurals to download complete white paper
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Adhesive Technology Review
Typical
Weld/Rivet Reduction
Adhesives
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Joint Design Principles
Tensile Compressive
Shear Peel
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Stress Distribution - Tensile
Str
ess
Str
ess
Bond Location
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Stress Distribution - Compression
Str
ess
Str
ess
Bond Location
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Stress Distribution - Shear
Str
ess
Str
ess
Bond Location
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Stress Distribution - Shear
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Stress Distribution – Cleavage & Peel
Str
ess
Str
ess
Bond Location
Cleavage
Peel
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Design Alternatives - Shear
Alternatives
Butt joint Simple strap butt joint
Double strap butt joint
Bevelled joint
Shouldered double strap butt joint
Double overlap
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Design Alternatives – T-Peel
Pure peel force Stiffening
Tensile/peel forces Transformation into tensile & pressure forces
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Joint Design Guidelines
1. Maximize tension, compression, & shear
2. Minimize peel & cleavage
3. Increase bond area - Wider is Better
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Real Life Examples
• Automotive Impact Test
• School Bus
• Loctite Trailer
• Stove Top
• Baseball Smasher
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Real Life Automotive Impact Test - Rivets
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Real Life Automotive Impact Test - Rivets
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Real Life Automotive Impact Test - Adhesives
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Real Life Automotive Impact Test - Adhesives
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Real Life Bus Bonding
Drivers:
1. Improved safety
2. Reduction in labor
3. Improved longevity
Visit www.henkelna.com/loctitestructurals to read complete article
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Real Life Trailer Bonding
Drivers:
1. Reduced labor costs
2. Faster throughput
3. Aesthetics
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Real Life Stove Top Bonding
Drivers:
1. Better aesthetics
2. Reduced scrap
3. Eliminated process step
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“Real Life” Batting Cage
Visit www.henkelna.com/loctitestructurals to view full video
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Summary
• Why use adhesives o Cost Savings, Improved Structural Strength, & Aesthetics
• Proper Joint Design o Maximize tensile, compression & shear, minimize peel & cleavage
• Real life examples
• Why Loctite® o #1 Adhesive Company in the World
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Total Solution
Meter Mix 1000 SS
Bulk Dispense System
Pneumatic 400 ml Dual
Cartridge Applicator
Custom Bulk Dispense Systems
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One on One Support
1-800-LOCTITE
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Web Resources
www.henkelna.com/loctitestructurals
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Design Guides
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Questions?
Design World Leslie Langnau [email protected] Phone: 440.234.4531 Twitter: @wtwh_rapidmfg
Henkel Brian Noonan [email protected] Phone: 860.571.2589 Twitter: @Loctite_NA
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Thank You
This webinar will be available at www.designworldonline.com & email
Tweet with hashtag #WhyAdhesives
Connect with Twitter: @Design_World
Facebook: /engineeringexchange
LinkedIn: Design World Group
Discuss this on EngineeringExchange.com
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