Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Employment and Education > Education

Thread Tools Search this Thread Display Modes
Old 12-29-2009, 12:09 PM
dgerr's Avatar
dgerr dgerr is offline
Senior Member
Join Date: Jul 2004
Rep: 221 Posts: 120
Location: New York
The December 2009 issue of Westlawn's free journal, The Masthead, is posted

The December 2009 issue of The Masthead is now posted and ready to read.

To read The Masthead, you must have a current version of ADOBE ACROBAT READER. (If The Masthead doesn’t load correctly, you probably need to download an up-to-date verion of Acrobat Reader. Go to: )

Highlights in this edition:
  • PassageMaker/Westlawn Design Competition Winners
  • Westlawn / 80 Years Young and Still Going Strong
  • Splashes
  • We Get Mail
  • Westlawn Student Alan Gluyas Builds his Design
  • Know-It-All Question
  • Westlawn/Profiles Pat Bray N.A.
  • News & Views
  • Technical Article: All About Cores - Part 2
  • ABYC Tech Notes: Saildrive Conundrum
  • Continuing Education for Designers, Boat Builders, & Techs
  • Training Links & Events
  • Back Issues of The Masthead
ABYC Tech Notes:
The Saildrive Conundrum
"What is not so rare are massive corrosion problems with these drives, to the extent that with lax inspection and maintenance regimens, they literally dissolve off the bottom of the boat. This is occurring for several reasons that are design specification related, which is why this article should be useful to Westlawn students and graduates, as well as boat builders, marine techs, and surveyors."

Read the entire article in this issue.

An Excerpt from the Tech. Article:
All About Cores Part 2
"Once vacuum bagging has been conquered, then vacuum infusion is the next logical step. With vacuum infusion, a full atmosphere (14.7 psi) is applied over the whole laminate which has been installed dry. Because you are working with dry fabrics and core, there is no time constraint to lay the fabrics and core in exactly the orientation desired. Once the dry full laminate is installed, a vacuum bag is drawn over the full part, and resin forced (sucked) under the bag under a full atmosphere of pressure, wetting out the whole laminate. In vacuum infusion, there are no voids anywhere in the laminate and no "never bonds", and always exactly the same amount of resin used each time, achieving optimum glass to resin rations, and consistent predictable physical properties. Vacuum infusion has allowed composites to be treated as a true engineered material, much like steel and aluminum. This is what has allowed the US Navy to infuse the deck house on the DDG-1000 destroyer currently being infused with balsa core and carbon fiber by Northrop Grumman Ship Building in Gulfport Miss."

Read Part 2 in this issue of The Masthead.
For Part 1, go to the September 09 issue

Go to:

to read The Masthead (allow a few moments for the file do download), and be sure to click on the "Click Here To Subscribe" at the bottom of the first page to receive the next issue automatically.

You can click on:

To see all back issues and read whichever one you want.

Dave Gerr
Director, Westlawn Institute
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Issue 11 of Westlawn's free quarterly journal, The Masthead, has just been released dgerr Education 0 08-31-2009
11:09 AM 
Issue Nine of Westlawn's Free Quarterly Newsletter Posted dgerr Education 0 03-15-2009
11:57 AM 
Issue Eight of Westlawn's Free Quarterly Newsletter Posted dgerr Education 0 12-17-2008
10:49 AM 
Issue Seven of Westlawn's Free Quarterly Newsletter Posted dgerr Education 0 09-22-2008
11:12 AM 
Issue Six of Westlawn's Free Quarterly Newsletter Posted dgerr Education 0 06-12-2008
12:05 PM 

Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.

All times are GMT -5. The time now is 04:28 PM.

Powered by: vBulletin Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2017 Boat Design Net