Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Tech 2002 Awards

March 2002
More 1 2 3 4 5

Pyrotechnic activator

To help prevent serious neck injuries during a typical rear impact, Hirtenberger Automotive Safety has developed a pyrotechnic activator for crash-active headrests. In the case of a rear impact, the device moves the headrest toward the occupant's head in less than 20 ms. Due to the quick and reliable reaction achieved by using pyrotechnics and sensors, the system presents a significant improvement in comparison to conventional systems. The system also is easily reloadable and, therefore, cost competitive. By launching the system in the new BMW 7 Series, the company is the first supplier of a pyrotechnic anti-whiplash system.


Plastic welding

Leister Lasersystems' Novolas OEM is an integrated system that can be used for plastic welding and soldering with lasers. It is available as an -S version with a fiber-coupled spot laser and an -L version with a line laser. Optics, clamping devices, positioning, and process control can be selected to match each application. The graphical user interface uses Windows NT-based software and provides for simple and quick programming of all machine parameters.


Magneto-rheological fluid

Lord Corp. and Delphi Automotive Systems co-developed the magneto-rheological (MR) fluid used in Delphi's MagneRide semi-active suspension system, which features a monotube design with no electromechanical valves or small moving parts. The peak power is 20 W at each of the system's four dampers. The specially formulated MR fluid has a low viscosity that is forced through a magnetized opening in the MagneRide damper. The material changes from a fluid state to a semi-solid state that is directly proportional to the magnetic field applied to it. Magnetic particles in the fluid form a dense network of chains when a magnetic force is applied to them. When it is removed, particles revert to their free, unchained form and allow movement of the dampers. MagneRide provides a 5-ms response time, which is three to five times faster than the hydraulic system in the CVRSS damper.


Anti-pinch protection

Mayser's anti-pinch protection systems for side windows are equipped with pressure-sensitive sensors. Two conductive surfaces are either integrated directly in the rubber seal of the window or are inserted in an additionally mounted rubber profile. If something gets caught between the rubber and the window, the contact is closed and the window movement is stopped or reversed. An advantage of the pressure-sensitive protection is its extremely short response time. In addition, the switching behavior of the sensors is consistent; the weather and strong vibration do not affect it. The sensors switch only if a small amount of pressure is applied to them. The company is currently working on a presence-sensing anti-pinch protection system that uses ultrasonic technology. Ultrasonic sensors can be used in power roofs for convertibles that require other solutions because of a lack of a solid frame.


Simulation table

A high-frequency multi-axial simulation table from MTS Systems Corp. features a hexapod with six extensible servo-hydraulic struts. It provides repeatable, high-frequency, six-degree-of-freedom simulation of the operating environment of automotive systems and components. Engineered to be stiff, the system delivers frequency content in excess of 250 Hz, giving it unique potential in both durability and noise and vibration testing. It offers sinusoidal testing, including sine sweep and sine dwell, and time history reproduction using MTS' Remote Parameter Control software. To ensure accuracy, controllability, and repeatability over a broad frequency range, the system uses displacement, velocity, and acceleration feedback in conjunction with a three variable control algorithm.


More 1 2 3 4 5

Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.