Adhesives and Sealants as an Enabling Technology for .../media/Files/Autosteel/Great Designs in...
Transcript of Adhesives and Sealants as an Enabling Technology for .../media/Files/Autosteel/Great Designs in...
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GDIS2017
Adhesives and Sealants as an Enabling Technology for
Lightweight, Safe, and High Performing Steel Vehicles
Ana Wagner
Adhesive & Sealant Council
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#GDIS | #SteelMatters 3
Outline
©2015 Industrial Market Insight LLC. All Rights Reserved.
• Types & Applications of Adhesives and Sealants in Automobile Body
• Automotive Industry Trends & Implications to Adhesives
— Global Designs
— Fuel Economy (& weight reduction)
— Auto / Electronic Convergence
— Sustainability
• Multi Material bonding applications
• Summary & Long-Term Outlook
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#GDIS | #SteelMatters 4
Benefits of Adhesives
4
Adhesives help manufacturers:
• Build structures that are stronger, stiffer, lighter
and better performing
• Make products quieter and more comfortable
• Solve difficult joining problems
Source: General Motors
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#GDIS | #SteelMatters 5
Adhesives in the Automobile Body
©2015 Industrial Market Insight LLC. All Rights Reserved.
Application Type
Front & rear fixed glass 1K U
Body-in-White 1K E
Panel inners / outers
Metals
Composite
Anti-flutter
1K E
2K E, U, A
1K sealants
Cavity filling foams E, U
A = Acrylic
E = Epoxy
U = Urethane
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#GDIS | #SteelMatters 6
Suppliers with global capabilities
Ability to provide material properties and
predict static and dynamic performance
Efficient powertrain and lightweight materials
Low lifetime environmental footprint
Changing user needs and priorities
Trends Implications
Auto/Electronic
Convergence
Sustainable
manufacturing
Increasing regulatory
hurdles
Global designs,
local production
©2015 Industrial Market Insight LLC. All Rights Reserved.
Light Vehicle Trends & Implications
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Emission Regulations
©2015 Industrial Market Insight LLC. All Rights Reserved.
Source: US EPA, NHSTA
Car
Pickup
Improvements in Powertrain, Aerodynamics, Rolling Resistance, and Weight will be required
EPA Fuel Economy Sticker Improvements
for Light Vehicles
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#GDIS | #SteelMatters 8
Conflicting Regulatory & Consumer Demands
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Comfort,
Convenience,
Capability
Handling &
Performance Safety Fuel Economy
Trend
Larger vehicles,
more features &
electronics
Faster, sportier.
Stiffer, more
power/weight
More energy
absorbing
capabilities
Lighter, more
efficient (34.1
MPG…54.3 MPG)
Impact to
vehicle
weight
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Light Vehicle Materials
©2015 Industrial Market Insight LLC. All Rights Reserved.
NSX
Steel will remain the material of choice for high volume production
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Body Material Trends
©2015 Industrial Market Insight LLC. All Rights Reserved.
• Mild steel losing share
• HSS gaining favor
• Aluminum making inroads
Industrial Market Insight Analysis based on sampling of passenger cars as reported by OEM
ASC Whitepaper: Adhesive Opportunities & Outlook in Light Vehicles
High strength steel has gained the most share of lightweight materials
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#GDIS | #SteelMatters 11
Source: ASC Grow the Vertical Report (Ground Transportation), Ducker Worldwide
ASC Whitepaper: Adhesive Opportunities & Outlook in Light Vehicles
Automotive Lightweight Material Trends
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Photo: BMW
Production volume: 60,000 units
Retail price: $90,000 – 120,000 USD
145m of adhesives
Multi-Material Construction: BMW 7 Series
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#GDIS | #SteelMatters 13
Photo: Compositesworld.com
Production volume: 45,000 units
Retail price: $82,500 – 115,000 USD
Multi-Material Construction: Audi A8
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Managing “Delta Alpha”
14
Source: Dow Automotive
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#GDIS | #SteelMatters 15
Managing “Delta Alpha”
15
Source: Dow Automotive
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#GDIS | #SteelMatters 16
Managing “Delta Alpha”
16
Source: Dow Automotive
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Managing “Delta Alpha”
17
Source: Dow Automotive
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#GDIS | #SteelMatters 18
Managing “Delta Alpha”
18
Source: Sika
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CAE modeling: roof example
Undesired roof
vertical deformation
baseline > 11 mm over
100 mm span
A
Optimized design
With correction
adhesive solution
Source: Dow Automotive
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#GDIS | #SteelMatters 20
“Down-gauging” & Weld bonding
Source: Industrial Market Insight
Challenge: stiffness & dynamic performance
Stiffness ~ Et (shapes)
~ Et3 (flat panels)
Lower stiffness = degraded handling & performance
* * *
* *
Solution: WELD BONDING
Increases stiffness & crash energy absorption
Decreases required spot welds or rivets
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#GDIS | #SteelMatters 21 ©2015 Industrial Market Insight LLC. All Rights Reserved.
Source: Sika, Daimler
Strength of Adhesives vs Other Joining Methods
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Shock Tower
Al casting replaces multi-piece stamped assembly
Adhesive reduces stress on fastener and improves fatigue life
Adhesive prevents galvanic corrosion in mixed material assembly
Source: Steel Market Development Institute Great Designs in Steel
Source: Industrial Market Insight
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Why are Structural Adhesives Effective?
23 Source: Dow Automotive
• Reduce stresses in joints, which improves durability
• Enable gauge reduction of steel, which reduces weight
• Higher loads can be sustained, which improves crash and safety performance
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#GDIS | #SteelMatters 24
Structural Adhesive Growth Trend
©2016 Industrial Market Insight LLC. All Rights Reserved.
Source: ASC Grow the vertical report (Ground Transportation)
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#GDIS | #SteelMatters 25
Structural Adhesive Usage Trend
25 Source: Industrial Market Insight
Structural adhesives growing most rapidly in premium vehicles
Premium
Entry & midmarket
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#GDIS | #SteelMatters 26 ©2015 Industrial Market Insight LLC. All Rights Reserved.
Linear Feet of Structural Adhesives in Select GM Vehicles
Vehicle Chevy Spark Chevy Malibu Cadillac ATS Cadillac CTS Cadillac CT6
Materials Steel Intensive Steel Intensive Steel Intensive
with Al
Steel Intensive
with Al
60% Aluminum
40% Steel
“…the difference in ride quality was
comparable to the variation between a luxury
automobile and an entry-level compact,” GM
wrote.
-Repairer Driven News, Oct 23, 2015
On GM evaluation of the ATS tested with and
without structural adhesive.
Structural Adhesives as a Differentiator
Source: Industrial Market Insight
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#GDIS | #SteelMatters 27
Summary
27
Adhesives help manufacturers:
• Build steel structures that are stronger, stiffer, lighter
and better performing
• Combine steel with other materials
• Make products quieter and more comfortable
Source: General Motors
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#GDIS | #SteelMatters 28
For More Information
Steve Duren
Adhesive & Sealant Council
425-999-2089