Search found 442 matches

by brian
Wed Aug 12, 2009 10:47 am
Forum: msmac3D General Q&A
Topic: Some Momentum Misconceptions
Replies: 2
Views: 144

Re: Some Momentum Misconceptions

This is some additional information on item: (6) above "There may also be a side-slap which obviously must be considered in the exchange of momentum and obviously does not occur in an instant". There's something about sideslaps! Rusty Haight sent us some information on the 2007 NYSTARS sideslap cras...
by brian
Tue Aug 11, 2009 5:08 pm
Forum: Misc Topics & News!
Topic: CSI Myths: The Shaky Science Behind Forensics
Replies: 0
Views: 1363

CSI Myths: The Shaky Science Behind Forensics

Interesting article from Popular Mechanics on forensics:CSI Myths:The Shaky Science Behind Forensics
The critque does not include any accident reconstruction techniques which are based on scientific applications of Newton's Laws
by brian
Tue Aug 11, 2009 10:13 am
Forum: Litigation Topics and News!
Topic: it's OK to be demur when testifying!
Replies: 0
Views: 1477

it's OK to be demur when testifying!

it's OK to be demur when testifying! ...from http://www.ca10.uscourts.gov/opinions/05/05-6262.pdf If judicial modesty is an admirable trait, what about expert witness modesty? A unanimous three-judge panel of the U.S. Court of Appeals for the Tenth Circuit issued a decision that resolves an issue t...
by brian
Mon Aug 10, 2009 7:57 pm
Forum: Crash Reconstruction News!
Topic: SAE J1674 "Investigation & Reconstruction Practices"
Replies: 0
Views: 1771

SAE J1674 "Investigation & Reconstruction Practices"

A recent email from SAE: TO: ALL SAE ACCIDENT INVESTIGATION AND RECONSTRUCTION PRACTICES CMTE MEMBERS This is to inform you that J1674 " Early Acquisition and Preservation of Information in a Motor Vehicle Accident " has been published. DESCRIPTION: SAE J1674 is 13 pages. Price is $61 ($48 for SAE m...
by brian
Tue Aug 04, 2009 1:53 pm
Forum: What Is?
Topic: What is DeltaV? A Discussion
Replies: 2
Views: 5635

Re: What is DeltaV? A Discussion

some additional comments/responses I posted: DeltaV/DeltaT gives you only the average acceleration of a collision event. It doesn't tell you about the severity of the collision. It also assumes a square wave of acceleration whereas impacts are more nearly a quarter sine wave or acceleration. There a...
by brian
Tue Aug 04, 2009 1:49 pm
Forum: What Is?
Topic: What is DeltaV? A Discussion
Replies: 2
Views: 5635

What is DeltaV? A Discussion

The following is some comments I made on another forum in 2000 in response to the question: What is DeltaV? Q: What is DeltaV? A: DeltaV is the time integral of the acceleration during the collision event. Acceleration alone cannot characterize injury. I recall seeing a list of some very high and ve...
by brian
Mon Aug 03, 2009 7:20 pm
Forum: Misc Topics & News!
Topic: Wade's mailbox review
Replies: 1
Views: 2769

Wade's mailbox review

Wade Bartlett has a monthly mailbox review which includes all sorts of neat 'stuff'. We recommend signing up for Wade's mailbox review if you don't already get it though some newgroup (like INCR ). To sign up: http://tech.groups.yahoo.com/group/Mailbox_Review/ The following is from Wade and containe...
by brian
Mon Aug 03, 2009 9:41 am
Forum: Distracted Driving News and Information
Topic: STOP Cell phone use while driving!
Replies: 11
Views: 11510

Re: STOP Cell phone use while driving!

some additional resources on the problem of cel phone use while driving:
Car & driver tests
And another NY Times article on cel phone issues.
by brian
Sun Jul 26, 2009 1:32 pm
Forum: Crash Reconstruction News!
Topic: HELP! If YOU or someone you know has been in an accident!
Replies: 1
Views: 4310

HELP! If YOU or someone you know has been in an accident!

Q: Have YOU or someone you know been involved in an accident and need HELP? A: In many cases over the years we have assisted individuals in accidents to help them sort out the facts and circumstances of the accident/collision. The initial and main assistance is to instruct them to try to accumulate ...
by brian
Sun Jul 26, 2009 1:32 pm
Forum: McHenry News!
Topic: HELP! If YOU or someone you know has been in an accident!
Replies: 2
Views: 126

HELP! If YOU or someone you know has been in an accident!

Q: Have YOU or someone you know been involved in an accident and need HELP? A: In many cases over the years we have assisted individuals in accidents to help them sort out the facts and circumstances of the accident/collision. The initial and main assistance is to instruct them to try to accumulate ...