That is going to be an expensive fix...

| No Comments

Ho. Li. Crap...  From the Seattle, WA FOX News affiliate:

Washington scientist admits faking steel-test results for Navy submarines
A metallurgist in Washington state pleaded guilty to fraud Monday after she spent decades faking the results of strength tests on steel that was being used to make U.S. Navy submarines.

Elaine Marie Thomas, 67, of Auburn, Washington, was the director of metallurgy at a foundry in Tacoma that supplied steel castings used by Navy contractors Electric Boat and Newport News Shipbuilding to make submarine hulls.

From 1985 through 2017, Thomas falsified the results of strength and toughness tests for at least 240 productions of steel — about half the steel the foundry produced for the Navy, according to her plea agreement, filed Monday in U.S. District Court in Tacoma. The tests were intended to show that the steel would not fail in a collision or in certain "wartime scenarios," the Justice Department said.

And this:

She suggested that in some cases she changed the tests to passing grades because she thought it was "stupid" that the Navy required the tests to be conducted at negative-100 degrees Fahrenheit. 

The current operating theory of why the Titanic sank is that the metal in its rivets became brittle at cold temperatures. They were fine in the shipyard - passed every test with flying colors but they would snap with a clean break when chilled: here, here, here and here.  Testing at —100° is a perfect way to accentuate any potential issues with the batch of steel.

I do blacksmithing and have studied a lot about metal heat treating.  It is not a trivial subject. Fascinating but not trivial.  For example, here is a chart that an engineer would use to determine the proper heat treatment of a specific steel alloy:

20211108-I-T.jpg

You are looking at Temperature and Time.  The elements of the graph indicate the relative concentrations of Martensite, AusteniteFerrite and Cementite in the crystaline structure. I am simplifying things greatly.  There are also options for cryogenic treatment.  And this is for just one alloy with a specific chemical composition.  Change anything and you have to develop an entirely new chart and an entirely new heat treatment protocol.  Also note that some transitions have to happen over a few seconds at a specific temperature.  Other transitions require several hours or maybe a week at a specific temperature.  You do not simply heat it red hot and plunge it into a bucket of water or oil. At least, not for a submarine hull...

What she did is unconscionable.

Leave a comment

November 2021

Sun Mon Tue Wed Thu Fri Sat
  1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30        

Environment and Climate
AccuWeather
Cliff Mass Weather Blog
Climate Depot
Ice Age Now
ICECAP
Jennifer Marohasy
Solar Cycle 24
Space Weather
Watts Up With That?


Science and Medicine
Junk Science
Life in the Fast Lane
Luboš Motl
Medgadget
Next Big Future
PhysOrg.com


Geek Stuff
Ars Technica
Boing Boing
Don Lancaster's Guru's Lair
Evil Mad Scientist Laboratories
FAIL Blog
Hack a Day
Kevin Kelly - Cool Tools
Neatorama
Slashdot: News for nerds
The Register
The Daily WTF


Comics
Achewood
The Argyle Sweater
Chip Bok
Broadside Cartoons
Day by Day
Dilbert
Medium Large
Michael Ramirez
Prickly City
Tundra
User Friendly
Vexarr
What The Duck
Wondermark
xkcd


NO WAI! WTF?¿?¿
Awkward Family Photos
Cake Wrecks
Not Always Right
Sober in a Nightclub
You Drive What?


Business and Economics
The Austrian Economists
Carpe Diem
Coyote Blog


Photography and Art
Digital Photography Review
DIYPhotography
James Gurney
Joe McNally's Blog
PetaPixel
photo.net
Shorpy
Strobist
The Online Photographer


Blogrolling
A Western Heart
AMCGLTD.COM
American Digest
The AnarchAngel
Anti-Idiotarian Rottweiler
Babalu Blog
Belmont Club
Bayou Renaissance Man
Classical Values
Cobb
Cold Fury
David Limbaugh
Defense Technology
Doug Ross @ Journal
Grouchy Old Cripple
Instapundit
iowahawk
Irons in the Fire
James Lileks
Lowering the Bar
Maggie's Farm
Marginal Revolution
Michael J. Totten
Mostly Cajun
Neanderpundit
neo-neocon
Power Line
ProfessorBainbridge.com
Questions and Observations
Rachel Lucas
Roger L. Simon
Samizdata.net
Sense of Events
Sound Politics
The Strata-Sphere
The Smallest Minority
The Volokh Conspiracy
Tim Blair
Velociworld
Weasel Zippers
WILLisms.com
Wizbang


Gone but not Forgotten...
A Coyote at the Dog Show
Bad Eagle
Steven DenBeste
democrats give conservatives indigestion
Allah
BigPictureSmallOffice
Cox and Forkum
The Diplomad
Priorities & Frivolities
Gut Rumbles
Mean Mr. Mustard 2.0
MegaPundit
Masamune
Neptunus Lex
Other Side of Kim
Publicola
Ramblings' Journal
Sgt. Stryker
shining full plate and a good broadsword
A Physicist's Perspective
The Daily Demarche
Wayne's Online Newsletter

About this Entry

This page contains a single entry by DaveH published on November 8, 2021 7:30 PM.

Something to remember for the next couple of months was the previous entry in this blog.

A two-fer from Don Surber is the next entry in this blog.

Find recent content on the main index or look in the archives to find all content.

Monthly Archives

Pages

OpenID accepted here Learn more about OpenID
Powered by Movable Type 5.2.9