Why You Should Join Automotive Glass Engineers On LinkedIn

I created Automotive Glass Engineers on LinkedIn to provide a community forum as well as a talent base for potential clients, suppliers and talent acquisition firms. As you know glass is very specific [commodity] and glass for transportation, which by the way is in the top two vehicle warranty failure modes is highly specialized with a very narrow bandwidth of talent.

You will find some of the most capable technical specialists in the transportation field. Automotive Glass Engineers specializes in product, process and bonding adhesives.

We have a best selling, award winning author that can provide you with a step by step “Design Solutions” book covering subjects like DFMEAs, PFMEAs and design tables showing the costs and ramifications of your decision making process.

I have created an open access approach. Feel free to post anything relevant as a member, remember your post reflects on you. Quality content is the goal.

Join now: https://www.linkedin.com/grp/home?gid=7491694&trk=my_groups-tile-flipgrp

Plus, here is what we talk about and the resources you’ll find:

Topic of the Week:
Each week a group member will post a new topic for discussion. I invite you to share your thoughts & expertise. My goal is to make you think and learn.

Engineering Issues:
Whether you’re an OEM, supplier or talent acquisition specialist. If you have questions, answers or concerns, voice them!

Open forum:
Let it rip! Be professional

Sound interesting? I hope so. I invite you to get engaged in discussions, ask questions, share your thoughts.

Click here to join: https://www.linkedin.com/grp/home?gid=7491694&trk=my_groups-tile-flipgrp

Best regards,

Windshield can show acceptable optics

Windshield can show acceptable optics at 40° installation angle, whereas at 20° degrees can be completely distorted. This occurs since the light ray is required to travel longer distance in the glass as the installation angle decreases. To put it simple, the thickness of the glass that is being viewed through increases as the installation angle decreases.

The steeper the “rake’ more glass you have to look through. FMVSS 205 says 70% LT (light Transmission), ever notice that aAS1 with and arrow right below your shade band? That means 70% of the ambient light must pass through. The steeper the angles, the more glass it has to pass through. There was a time when the Federal government was going to mandate that measurement be taken from the driver’s line of sight, right now it is taken normal (perpendicular) to a point on the WS. If the government was successful in that direction, every car in the US, Canada and Europe would have to be quarantined.

Installation Angle

Designing Glass for Style© by Lyn Zbinden – Main Types of Glass and Alternative Materials used in Automotive

SAE photo for FBDesigning Glass for Style© by Lyn Zbinden

 MAN Spacetruck

 Main Types of Glass and Alternative Materials used in Automotive

Today, flat (float) glass comes in many highly specialised forms intended for different products and applications. Flat glass produced by way of the float process is often further processed to give it certain qualities or specificities. In this way, the industry can meet the various requirements and needs of the automotive and subspecialties like solar absorption or reflectance.

Cutting rollers

Annealed glass

Annealed glass is the basic flat glass product that is the first result of the float process. It is common glass that tends to break into large, jagged shards. It is used in some end products and often in double-glazed windows. It is also the starting material used to produce more advanced products through further processing such as laminating, toughening, coating, etc.




Toughened glass

Toughened glass is treated to be far more resistant to breakage than simple annealed glass and to break in a more predictable way when it does break, thus providing a major safety advantage in almost all of its applications.

Toughened glass is made from annealed glass treated with a thermal tempering process. A sheet of annealed glass is heated to above its “annealing point” of 600°C; its surfaces are then rapidly cooled while the inner portion of the glass remains hotter. The different cooling rates between the surface and the inside of the glass produces different physical properties, resulting in compressive stresses in the surface balanced by tensile stresses in the body of the glass.

These counteracting stresses give toughened glass its increased mechanical resistance to breakage, and are also, when it does break, what cause it to produce small, regular, typically square fragments rather than long, dangerous shards that are far more likely to lead to injuries. Toughened glass also has an increased resistance to breakage as a result of stresses caused by different temperatures within a pane.

Toughened glass has extremely broad applications in products for both buildings and, automobiles and transport, as well as in other areas. Car windshields and windows, glass portions of building facades, glass sliding doors and partitions in houses and offices, glass furniture such as table tops, and many other products typically use toughened glass. Products made from toughened glass often also incorporate other technologies, especially in the building and automotive and transport sectors.


Laminated glass

Laminated glass is made of two or more layers of glass with one or more “interlayers” of polymeric material bonded between the glass layers.

Laminated glass is produced using one of two methods:

1) Poly Vinyl Butyral (PVB) laminated glass is produced using heat and pressure to sandwich a thin layer of PVB between layers of glass. On occasion, other polymers such as Ethyl Vinyl Acetate (EVA) or Polyurethane (PU) are used. This is the most common method.

2) For special applications, Cast in Place (CIP) laminated glass is made by pouring a resin into the space between two sheets of glass that are held parallel and very close to each other.

Laminated glass offers many advantages. Safety and security are the best known of these, so rather than shattering on impact, laminated glass is held together by the interlayer. This reduces the safety hazard associated with shattered glass fragments, as well as, to some degree, the security risks associated with easy penetration. But the interlayer also provides a way to apply several other technologies and benefits, such as colouring, sound dampening, and resistance to fire, ultraviolet filtering and other technologies that can be embedded in or with the interlayer.

Laminated glass is used extensively in building and housing products and in the automotive and transport industries. Most building facades and most car windscreens, for example, are made with laminated glass, usually with other technologies also incorporated.




Surface coatings can be applied to glass to modify its appearance and give it many of the advanced characteristics and functions available in today’s flat glass products, such as low maintenance, special reflection/transmission/absorption properties, scratch resistance, corrosion resistance, etc.

Coatings are usually applied by controlled exposure of the glass surface to vapours, which bind to the glass forming a permanent coating. The coating process can be applied while the glass is still in the float line with the glass still warm, producing what is known as “hard-coated” glass. Alternatively, in the “off-line” or “vacuum” coating process, the vapour is applied to the cold glass surface in a vacuum vessel.



Extra clear glass

Extra clear glass is not the result of processing of annealed glass, but instead a specific type of melted glass. Extra clear glass differs from other types of glass by its basic raw material composition. In particular, this glass is made with very low iron content in order to minimise its sun reflection properties. It therefore lets as much light as possible through the glass. It is most particularly of use for solar energy applications where it is important that the glass cover lets light through to reach the thermal tubes or photovoltaic cells. Anti-reflective properties can be further increased by applying a special coating on the low-iron glass. It can also be used in windows or facades as it offers excellent clarity, which allows occupants to appreciate true colours and to enjoy unimpaired views.





As automakers seek improved fuel efficiency, polycarbonate’s lightweight, impact-resistant properties can reduce vehicle weight while enabling sleek curves in modern designs. Not only do polycarbonates reduce the weight of vehicle components by up to 50%, but also help cutting fuel consumption and CO2 emissions, while keeping strength, safety and style.

Concept car ZaZen

Concept car ZaZen

Lightweight materials may find exciting opportunities in the automotive industry as a means of increasing fuel efficiency. With 75% of fuel consumption relating directly to vehicle weight, potential weight reductions that result in improved price-performance ratio promote use of lightweight materials. The automotive industry can expect an impressive 6-8% improvement in fuel usage with only 10% reduction in vehicle weight. This translates into a reduction of around 20 kg of CO2 per kilogram of weight reduction over the vehicle’s lifetime. Lighter vehicles facilitate easier braking, reduced collision impact overall vehicle performance and superior driving experience. One of the key plastics used in automotive sector is polycarbonate (PC). PC has dominated the market for vehicle headlamp covers for 15 years, and now it challenges glass in windows. The primary advantages of PC automotive glazing are lowered weight and associated CO2 emissions reductions along with greater styling freedom and simpler functional integration. The main drawback to a PC is weathering, resistance to scratch, positions on the vehicle where PC can be used by federal standards and cost. By the time you apply a hard coat, any potential savings derived from weight is now lost due increased piece price cost which can be as much as 4:1.



It takes more than 4.5 times the energy to produce a pound of aluminum versus a pound of steel.

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zbindendesign and SAE International

It takes more than 4.5 times the energy to produce a pound of aluminum versus a pound of steel. Which of the following statement(s) about advanced high-strength steel (AHSS) recycling is/are true?
A. AHSS, like all steel, is 100% recyclable.
B. Steel remains the most recycled material.
C. Steel recycling has a large infrastructure, including 12,000 dismantlers in the United States and 300 shredders
D. Steel autos enjoy a 97% end-of-life recycling rate.
E. All of the above.

SAE International – This week is ‘Glass week’

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zbindendesign and SAE International

Good reading on many topics. This week is ‘Glass week’

SAE International – This week we’ll be talking about GLASS!

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This week we’ll be talking about GLASS! Thanks to the book “Glass Engineering; Design Solutions for Automotive Applications,” we have lots of great information to share!

Designing for Style© by Lyn Zbinden upcoming releases

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Is a writing machine today 🙂

Released tomorrow: 27/05/2014 Designing for Style© by Lyn Zbinden – Part 2

Designing for Style© by Lyn Zbinden http://www.autodesignclub.com/
In progress now:

1) Manufacturing Float Glass Step-by-step – 1,419 words
2) Overview of the automotive and transport glass market – 358 words
3) Main Types of Glass – 863 words

Written and submitted to my editor in Italy: BMW i8 –  683 words

Written, will submit shortly: 1) Innovative uses (this on the Ferrari and Lotus) – 679 words. 2) Polycarbonates (5 part segment) – 1,420 words. 3) Design Rules overview – 245 words. Design Rules (5 part segment) – ?? words (a lot because this is part of my book)

Edward N. Cole Award for Automotive Engineering Innovation! Nomination

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zbindendesign and SAE International

Do you know an SAE Member whose innovative design is described in an SAE paper? What about someone whose made significant achievements in automotive engineering? If so, nominate them for the Edward N. Cole Award for Automotive Engineering Innovation! Nomination deadline is June 1st!

The award honors the memory of Edward N. Cole, former President and Chief Operating Officer of General Motors Corporation, and the inspiration he provided to others in the engineering profession by his continuing search and drive for product innovation.

Designing for Style© Part 1



Some designs make for good style. Some make for good engineering.

Around 1970, a rivalry was brewing between the famous design-houses of Pininfarina and Bertone. The coachbuilders were trying to outdo each other with flamboyant and beautiful automobiles.

In the 1970 Lancia Strato’s concept car, later named Stratos Zero, the windshield extended overhead giving what’s claimed to be a great view of the road in front and the sky above.  As a glass designer and engineer, I like this. One of my six main design rules, ‘Rate of Change’ is slowed by the almost flat windshield. Bertone not only created something that please both engineering and styling, but he “Designed with Style”.


The futuristic instrument panel was offset to the left and displayed info in green acrylic glass. The Zero was just a design concept but it was a fully functioning prototype.

Lance IP

When an automaker commits to design a new vehicle, there are many factors that act upon the proposal that will influence the success of the project. In most mass produced offerings, domestic and foreign, the number one driver is program capitalization. The automaker asks, “What can we afford to spend or what can we afford to invest as a company and who are we trying to reach as a target audience”?

Through a series of contributions, I will cover the entire product portfolio of an automotive manufacturer, from those most affected by production volume, like the mass produced Toyota Corolla or Volkswagen Beetle to the least affected, the luxury sport segment, Maserati or Ferrari. There are sustainable engineering rules that govern good design of glass; however some of these rules can be “bent” depending on the vehicle. I will focus in particular on, glass. This is a component often overlooked, but critical in passing stringent tests, i.e. roof crush and mitigating occupant ejection due to poor assembly practices. It remains one of highest warrantied components in a manufacture’s assembled parts.


What 6 signals are traditionally measured in a motor racing data logging system?

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zbindendesign and SAE International

Has another question for you! What 6 signals are traditionally measured in a motor racing data logging system?