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.

Technical Innovations

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Nylon 6 from DSM for Synerject air injectors


Synerject uses a 30% glass-fiber reinforced nylon 6 from DSM Engineering Plastics for its air injectors for personal watercraft and motorized scooters.

A joint venture between Orbital Engine Co. and Siemens Automotive, Synerject, was established to develop and distribute integrated fuel systems using Orbital's proprietary air-assisted direct fuel-injection technology, which according to Synerject, is the next logical step in the evolution of the internal-combustion engine.

The company uses Akulon K224-HG6U, a nylon 6 from DSM Engineering Plastics, for its air injectors used in a number of engines for personal watercraft and motorized scooters. The injectors are connected to the electronic control unit and allow for the proper mixing of air and fuel just prior to direct injection into the engine cylinder. The injectors contribute to increased fuel efficiency of the engine, and, quotes Synerject, lower emissions by 30 to 40%.

DSM's 30% glass-fiber nylon 6 was chosen for the air injectors due to its inherent mechanical strength and high-temperature resistance. The material also offers high deflection temperature capabilities under load. The glass-fiber reinforcement contributes to improved dimensional stability.

Synerject has also developed a new class of air injectors called Strata, which are adaptable to both non-automotive and automotive four-stroke applications using Orbital Combustion Process technology. The new air injectors were developed specifically to maximize the synergies common to both markets while including unique features required for a specific market. The extended capabilities of the Strata injectors enable them to be used on larger vehicles such as powerboats and potentially automobiles, while the parts can be assembled on the same production line.

- Jean L. Broge


Carpenter's soft magnetic alloy


Hiperco Alloy 15 has high magnetic saturation and low coercivity.

Carpenter Technology Corp.'s Hiperco Alloy 15 is a soft magnetic alloy with reduced cobalt content offering high saturation magnetization (flux density) and relatively high electrical resistivity. An addition to Carpenter's Hiperco family of soft magnetic alloys, the new grade can be considered for many new and high-performance applications for which cost considerations have restricted the use of higher-cobalt soft magnetic materials.

The 15Co-2.7Mn-Fe alloy can be used for applications such as actuators, relays, fuel injectors, switched reluctance motors, magnetic bearings, flywheels, sensors, high-performance electromagnets, and linear motors. For solenoid applications, it is particularly suitable for those that have to be turned on and off with great force.

Hiperco Alloy 15 has a high magnetic saturation (22.3-22.8 kilogauss) and possesses a degree of flux density greater than that of iron and silicon-irons at high fields. Electrical resistivity for AC applications is 38-42 ľohm•cm (125-138 ľohm•in), compared with Hiperco Alloy 27, which is 19 ľohm•cm (62 ľohm•in). The new grade's coercivity is relatively low at 1.9 to 2.4 oersteds. Its magnetic properties can be optimized by a two-step annealing process—heating first at 2156°F (1180°C), then holding at 1292°F (700°C).

Hiperco Alloy 15 can be used as a substitute for materials such as nickel-irons, ferritic stainless steels, silicon irons, as well as irons that do not provide adequate flux density. Unlike the higher-cobalt alloys, Hiperco Alloy 15 is ductile at room temperature. It can be forged to produce bulk parts, cold-compacted in powder forms, and made into strip products. While it can be processed via stamping and machining, it also can be easily bent and formed.

The product is available in strip, bar, and plate.

- Patrick Ponticel


Heavy-duty suspension from Hendrickson


Hendrickson subjected its new HAULMAXX suspension to extensive fatigue and durability laboratory testing to ensure it would meet the requirements for heavy-duty-vehicle applications.

Hendrickson International says it uses high-strength materials and advanced manufacturing methods in its new heavy-duty truck suspension for applications that include dump trucks, concrete mixers, logging trucks, and crane/boom vehicles. The HAULMAXX suspension offers up to 430 mm (17 in) of loaded, diagonal wheel articulation to maintain traction with all drive wheels for demanding off-highway and job-site conditions. According to Hendrickson, the lightweight suspension enables operators to carry over 225 kg (500 lb) of additional payload compared to competitive steel-spring suspensions during runs while maximizing durability.

Sean Coleman, Marketing Manager for Hendrickson Truck Suspension Systems, described the HAULMAXX as using an innovative spring geometry that couples natural rubber with a high-density thermoset to adjust to a load and provide improved ride and handling characteristics in heavy-duty applications. The system's variable rate spring system cushions the driver and helps protect the cab, chassis, and body equipment from NVH.

The system uses a bar pin axle connection to extend bushing life and provide alignment capability for better tire wear. The design of the suspension and associated crossmem-bers was accomplished through a cooperative development program between Hendrickson, Kenworth, and Peterbilt.

- Jean L. Broge


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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.