ranfer

Self locking material

Recommended Posts

Is there a material that behaves like a seat belt ? Locks when fast pulling and allows movement during slow pulling ?

Share this post


Link to post
Share on other sites

Thank you for all the responses,

Also searched for "D3O goo", that is also performing in a similar way.

Share this post


Link to post
Share on other sites
11 hours ago, Carrock said:

Silly putty.

The problem here is that it snaps if stretched too quickly, such as in the case of a seat belt in a collision. It would make a great bumper though, wouldn't it? Or boxing gloves?

Share this post


Link to post
Share on other sites
29 minutes ago, Phi for All said:

The problem here is that it snaps if stretched too quickly, such as in the case of a seat belt in a collision. It would make a great bumper though, wouldn't it? Or boxing gloves?

I was rather intending a fun/annoying quick answer.

I wouldn't be very keen on any seat belt that went rigid just when I wanted it to spread out stresses...

It does have lots of potential uses such as you've suggested. It's 'only' a matter of engineering.

My favourite (Daedalus in New Scientist) was as the paving for (very) short stay parking.

Share this post


Link to post
Share on other sites
4 minutes ago, Carrock said:

It does have lots of potential uses such as you've suggested. It's 'only' a matter of engineering.

A liner for bike helmets, maybe. Also, it would be funny to challenge someone to a duel with Silly Putty gloves (they look like rubber, hit like a rock).

12 hours ago, ranfer said:

Is there a material that behaves like a seat belt ? Locks when fast pulling and allows movement during slow pulling ?

I don't think a single material has all the properties you'd need for the kinds of stress you're talking about. Seat belts have multiple systems, including the woven straps for restraint, the tension mechanism, height adjustor, and latch mechanism. 

Also, the seat belt is a proven mechanism. It's ubiquitous from mass production and therefore inexpensive. Anything new has lots of hurdles to overcome in terms of cost efficiency vs lives saved. It's estimated that seat belts save about 15K lives every year in the US alone. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now