WorldCat Identities

Townsend, Dennis P.

Overview
Works: 109 works in 204 publications in 2 languages and 4,027 library holdings
Genres: Handbooks, manuals, etc 
Roles: Author, Editor
Classifications: TJ184, 621.83
Publication Timeline
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Most widely held works by Dennis P Townsend
Dudley's gear handbook by Darle W Dudley( Book )

13 editions published between 1962 and 1992 in English and Spanish and held by 345 WorldCat member libraries worldwide

Surface pitting fatigue life of noninvolute, low-contact-ratio gears by Dennis P Townsend( Book )

1 edition published in 1990 in English and held by 156 WorldCat member libraries worldwide

Evaluation of a vibration diagnostic system for the detection of spiral bevel gear pitting failures by Dennis P Townsend( Book )

4 editions published in 1996 in English and held by 86 WorldCat member libraries worldwide

A vibration diagnostic system was used to detect spiral bevel gear surface pitting fatigue in a closed loop spiral bevel gear fatigue test rig. The diagnostic system consists of a personal computer with an analog to digital conversion board, a diagnostic system unit and software. The diagnostic system performs time synchronous averaging of the vibration signal and produces a vibration image of each tooth on any gear in a transmission. Several parameters were analyzed including gear stresswave and raw baseband vibration, kurtosis, peak ratios of several parameters etc. The system provides limits for the various parameters and gives a warning when the limits are exceeded. Three spiral bevel gear tests were monitored with this system. The results show that the system is effective at detecting spiral bevel gear tooth surface pitting damage and other anomalies in the test rig
Measurement of gear tooth dynamic friction by Brian Rebbechi( Book )

3 editions published in 1996 in English and held by 84 WorldCat member libraries worldwide

Lubricant jet flow phenomena in spur and helical gears with modified addendums-- for radially directed individual jets by Lee S Akin( Book )

3 editions published between 1988 and 1989 in English and held by 83 WorldCat member libraries worldwide

This paper develops the mathematical relations for the Virtual Kinematic Model as an improvement over the vectorial model developed earlier. The model solution described herein the most energy efficient means of cooling gears-that is, it requires the least pressure of pumping power to distribute the coolant on the tooth surface. Further, this nozzle orientation allows impingement to the root of the tooth if needed and provides the most cooling control when compared to into-mesh or out-of-mesh cooling. Keywords: Lubrication; Gears; Cooling; Oil jet flow; Gear Geometry; Mathematical models. (sdw)
Minimization of the vibration energy of thin-plate structure by Katsumi Inoue( Book )

1 edition published in 1992 in English and held by 83 WorldCat member libraries worldwide

Dynamic loading of spur gears with linear or parabolic tooth profile modifications by Changyi Lin( Book )

2 editions published between 1988 and 1989 in English and held by 83 WorldCat member libraries worldwide

Surface fatigue life of carburized and hardened M50NiL and AISI 9310 spur gears and rolling-contact test bars by Dennis P Townsend( Book )

1 edition published in 1989 in English and held by 83 WorldCat member libraries worldwide

Optimum design of a gearbox for low vibration by Katsumi Inoue( Book )

1 edition published in 1992 in English and held by 83 WorldCat member libraries worldwide

Surface fatigue life of CBN and vitreous ground carburized and hardened AISI 9310 spur gears by Dennis P Townsend( Book )

4 editions published in 1988 in English and held by 83 WorldCat member libraries worldwide

Spur gear surface endurance tests were conducted to investigate CBN ground AISI 9310 spur gears for use in aircraft applications, to determine their endurance characteristics and to compare the results with the endurance of standard vitreous ground AISI 9310 spur gears. Test were conducted with VIM-VAR AISI 9310 carburized and hardened gears that were finish ground. Grinding of Carburized and Hardened Gear Teeth for aircraft application has been standard practice for many years. Grinding is required to produce the required accuracy and surface finish necessary for improved life, reduced noise and dynamic loads for aircraft gears. Until a few years ago, the method used for grinding hardened gears was the standard vitreous grinding wheels
Improvement in surface fatigue life of hardened gears by high-intensity shot peening by Dennis P Townsend( Book )

1 edition published in 1992 in English and held by 82 WorldCat member libraries worldwide

Surface fatigue life of M50NiL and AISI 9310 spur gears and R C bars by Dennis P Townsend( Book )

2 editions published in 1991 in English and held by 82 WorldCat member libraries worldwide

Spur gear endurance tests and rolling-element surface fatigue tests were conducted to investigate vacuum-induction-melted, vacuum-arc-remelted (VIM- VAR) M50NiL steel for use as a gear steel in advanced aircraft applications, to determine its endurance characteristics, and to compare the results with those for standard VAR and VIM-VAR AISI 9310 gear material. Tests were conducted with spur gears and rolling-contact bars manufactured from VIM-VAR M50NiL and VAR and VIM-VAR AISI 9310. The gear pitch diameter was 8.9 cm (3.5 in.). Gear test conditions were an inlet oil temperature of 320 K (116 F), an outlet oil temperature of 350 K (170 F), a maximum Hertz stress of 1.71 GPa (248 ksi), and a speed of 10 000 rpm. Bench rolling-element fatigue tests were conducted at ambient temperatures with a bar speed of 12 500 rpm and a maximum Hertz stress of 4.83 GPa (700 ksi). The VIM-VAR M50NiL gears had a surface fatigue life that was 4.5 and 11.5 times that for VIM-VAR and VAR AISI 9310 gears, respectively. The surface fatigue life of the VIM-VAR M50NiL rolling-contact bars was 13.2 and 21.6 times that for the VIM-VAR and VAR AISI 9310, respectively. The VIM-VAR m50NiL material was shown to have good resistance to fracture through a fatigue spall and to have fatigue life far superior to that of both VIM-VAR and VAR AISI 9310 gears and rolling-contact bars
Wear consideration in gear design for space applications by Lee S Akin( Book )

2 editions published between 1988 and 1989 in English and held by 82 WorldCat member libraries worldwide

Dynamic measurements of gear tooth friction and load by Brian Rebbechi( Book )

2 editions published in 1991 in English and held by 81 WorldCat member libraries worldwide

As part of a program to study fundamental mechanisms of gear noise, static and dynamic gear tooth strain measurements were made on the NASA gear- noise rig. Toothfillet strains from low contact ratio spur gears were recorded for 28 operating conditions. A method is introduced whereby strain gage measurements taken from both the tension and compression sides of a gear tooth can be transformed into the normal and frictional loads on the tooth. This technique was applied to both the static and dynamic strain data. The static case results showed close agreement with expected results. For the dynamic case, the normal-force computation produced very good results, but the friction results, although promising, were not as accurate. Tooth sliding friction strongly affected the signal from the strain gage on the tension side of the tooth. The compression gage was affected by friction to a much lesser degree. The potential of the method to measure friction force has been demonstrated, but further refinement will be required before this technique can be used to measure friction forces dynamically with an acceptable degree of accuracy
Gear and transmission research at NASA Lewis Research Center by Dennis P Townsend( Book )

1 edition published in 1997 in English and held by 81 WorldCat member libraries worldwide

Profile modification to minimize spur gear dynamic loading by Changyi Lin( Book )

1 edition published in 1988 in English and held by 81 WorldCat member libraries worldwide

Surface fatigue life and failure characteristics of EX-53, CBS 1000M, and AISI 9310 gear materials by Dennis P Townsend( Book )

3 editions published in 1985 in English and held by 80 WorldCat member libraries worldwide

Surface fatigue life of high temperature gear materials by Dennis P Townsend( Book )

2 editions published in 1994 in English and held by 80 WorldCat member libraries worldwide

Three high temperature gear materials were evaluated using spur gear surface fatigue tests. These materials were, VASCO max 350, VASCO matrix H, and nitralloy N and were evaluated for possible use in high temperature gear applications. The fatigue life of the three high temperature gear materials were compared with the life of the standard AISI 9310 aircraft gear material. Surface fatigue tests were conducted at a lubricant inlet temperature of 321 K (120 deg F), a lubricant outlet temperature of 350 K (170 deg F), a maximum Hertz stress of 1.71 GPa (248 ksi), a speed of 10000 rpm and with a synthetic paraffinic lubricant. The life of the nitralloy N was approximately the same as the MSI 9310, the life of the VASCO max 350 was much less than the AISI 9310 while the life of the VASCO matrix H was several times the life of the AISI 9310. The VASCO max 350 also showed very low fracture toughness with approximately half of the gears failed by tooth fracture through the fatigue spall. The VASCO matrix II had approximately 10-percent fracture failure through the fatigue spalls indicating moderate to good fracture toughness. (MM)
Evaluation of CBS 600 carburized steel as a gear material by Dennis P Townsend( Book )

4 editions published between 1978 and 1979 in English and held by 71 WorldCat member libraries worldwide

Gearing by John J Coy( Book )

2 editions published in 1985 in English and held by 29 WorldCat member libraries worldwide

 
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Audience level: 0.58 (from 0.52 for Dudley's g ... to 0.64 for Surface fa ...)

Alternative Names
Townsend, D. P.

Townsend, D. P. (Dennis P.)

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