Log in

Relevant bibliographies by topics / Turbo prolog

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers

Academic literature on the topic 'Turbo prolog'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Turbo prolog.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Turbo prolog"

1

Weglarz, Jan. "Expert systems development in Prolog and Turbo-Prolog." European Journal of Operational Research 41, no. 2 (July 1989): 253–54. http://dx.doi.org/10.1016/0377-2217(89)90395-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Hankley, W. "Feature analysis of Turbo Prolog." ACM SIGPLAN Notices 22, no. 3 (March 1987): 111–18. http://dx.doi.org/10.1145/24697.24709.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Fisher, Peter F., and Chandra S. Balachandran. "STAX: a turbo prolog rule-based system for soil taxonomy." Computers & Geosciences 15, no. 3 (January 1989): 295–324. http://dx.doi.org/10.1016/0098-3004(89)90042-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Lai, Ray. "Expert Systems development in Prolog and Turbo Prolog by Peter Smith, Sigma Press (distributed by Wiley & Sons), 1988, 214 pp, £12.95." Knowledge Engineering Review 4, no. 1 (March 1989): 76–79. http://dx.doi.org/10.1017/s0269888900004781.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Cierzynski. "HAUGG, F., S. OMLOR: Expertensysteme of PCs. Entwicklung von Expertensystemen auf Turbo PROLOG. Carl Hanser Verlag, München 1988, 164 S., DM 48,- ISBN 3-446-14980-5." Biometrical Journal 32, no. 3 (January 18, 2007): 302. http://dx.doi.org/10.1002/bimj.4710320309.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Minardi, Daniele, Giulio Milanese, Gianni Parri, Vito Lacetera, and Giovanni Muzzonigro. "Non-muscle invasive high grade urothelial carcinoma of the bladder. Which factors can influence understaging at the time of radical cystectomy?" Archivio Italiano di Urologia e Andrologia 88, no. 1 (March 31, 2016): 13. http://dx.doi.org/10.4081/aiua.2016.1.13.

Full text

Abstract:

Objective: To evaluate the main factors which influence understaging in patients with T1G3 non-muscle invasive bladder cancer (NMIBC). Materials and methods: 109 patients with T1/G3 underwent transurethral resection of bladder tumor (TURBT) and then radical cystectomy (RC) with pelvic lymph nodes dissection. A number of variables were considered when evaluating the detection of understaging. We considered the patients age and gender, as well as the size, number, location and morphology of their tumor. We also considered coexistence of bladder carcinoma in situ (CIS), microscopic vascular invasion and deep lamina propria invasion. The level of experience of the surgeon was also analyzed. Results: in RC samples muscle invasion, that is understaging, was detected in 74 (67.9%) patients, while 35 (32.1%) patients were appropriately staged. In these cohort of patients with high grade tumors, understaging was associated with deep lamina propria and microscopic vascular invasion, multiple tumors, tumor size > 6 cm, tumor location (trigone and dome), presence of residual tumor; age, gender, tumor morphology, CIS associated, and experience of urological surgeon were not associated with clinical understaging. Conclusions: in our study, evaluating patients with high grade NMIBC at first TURBT, we identified some risk factors that need to be considered and that are able to increase the risk of understaging: deep lamina propria and microscopic vascular invasion, multiple tumors, tumor size > 6 cm, tumor location (trigone and dome), presence of residual tumor. When these risk factors are present, performing an early cystectomy, and not a re-TURBT, could lower the risk of worse pathological finding due to rapid disease progression of the high grade tumors, and can prolong survival.

APA, Harvard, Vancouver, ISO, and other styles

7

Martynov, Sergey, and Tatyana Dobrotvorskaya. "Genealogical Analysis of the North-American Spring Wheat Varieties with Different Resistance to Pre-harvest Sprouting." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 70, no. 6 (December 1, 2016): 370–77. http://dx.doi.org/10.1515/prolas-2016-0057.

Full text

Abstract:

AbstractA comparative analysis of genetic diversity of North American spring wheat varieties differing in resistance to pre-harvest sprouting was carried out. For identification of sources of resistance the genealogical profiles of 148 red-grained and 63 white-grained North-American spring wheat varieties with full pedigrees were calculated and estimates were made of pre-harvest sprouting. The cluster structure of the populations of red-grained and white-grained varieties was estimated. Analysis of variance revealed significant differences between the average contributions of landraces in the groups of resistant and susceptible varieties. Distribution of the putative sources of resistance in the clusters indicated that varieties having different genetic basis may have different sources of resistance. For red-grained varieties the genetic sources of resistance to pre-harvest sprouting are landraces Crimean, Hard Red Calcutta, and Iumillo, or Button, Kenya 9M-1A-3, and Kenya-U, or Red Egyptian and Kenya BF4-3B-10V1. Tracking of pedigrees showed these landraces contributed to the pedigrees, respectively, via Thatcher, Kenya-Farmer, and Kenya-58, which were likely donors of resistance for red-grained varieties. For white-grained varieties the sources of resistance were landraces Crimean, Hard Red Calcutta, Ostka Galicyjska, Iumillo, Akakomugi, Turco, Hybrid English, Rough Chaff White and Red King, and putative donors of resistance — Thatcher, RL2265, and Frontana. The genealogical profile of accession RL4137, the most important donor of resistance to pre-harvest sprouting in North American spring wheat breeding programmes, contains almost all identified sources of resistance.

APA, Harvard, Vancouver, ISO, and other styles

8

Grivas, Petros, Maneka Puligandla, Suzanne Cole, Kevin Dale Courtney, Robert Dreicer, Benjamin Adam Gartrell, Jeremy Paul Cetnar, et al. "PrE0807 phase Ib feasibility trial of neoadjuvant nivolumab (N)/lirilumab (L) in cisplatin-ineligible muscle-invasive bladder cancer (BC)." Journal of Clinical Oncology 37, no. 15_suppl (May 20, 2019): TPS4594. http://dx.doi.org/10.1200/jco.2019.37.15_suppl.tps4594.

Full text

Abstract:

TPS4594 Background: Neoadjuvant cisplatin-based chemotherapy before radical cystectomy (RC) improves outcomes but ~50% of patients (pts) are cisplatin-unfit. Anti-PD(L)1 agents can prolong overall survival (OS) in platinum-resistant advanced BC and have shown high pathologic complete response rate (pCR) and safety as single agent in phase II trials in the neoadjuvant setting. The combination of anti-PD-1 and anti-KIR agents is feasible and very attractive based on complementary and non-overlapping roles in regulating adaptive and innate immune response as well as impacting the function CD8+ T and NK-cells. Higher CD8+ T cell density (TCD) at RC tissue correlates with longer OS. We hypothesize, that combining anti-PD1 (N) with anti-KIR (L) is safe and feasible as neoadjuvant therapy in cisplatin-unfit pts and results in high CD8+ TCD at RC. Methods: Phase Ib multi-institutional trial evaluating 2 doses (4 weeks apart) of N alone or N+L in 2 cohorts; pts will be assigned sequentially to N (Cohort 1), and if there is no negative safety signal after the first 12 pts, subsequent pts will be assigned to N+L (Cohort 2). Key eligibility: cT2-4aN0-1M0 stage, ≥20% tumor at TURBT, adequate organ function, no autoimmune disease within 2 years, no concurrent invasive upper urinary tract carcinoma or other active cancer. Primary endpoint: safety based on CTCAE v5.0 measured as the rate of ≥G3 treatment related adverse events (AE). Key secondary endpoints: CD8+ TCD absolute and % change between TURBT and RC, % of pts who do not get RC within 6 weeks after neoadjuvant treatment due to treatment-related AE, % pCR, recurrence-free survival, and evaluation of biomarkers in tumor tissue, blood, urine. Rates of ≥Grade 3 AE with neoadjuvant treatment will be reported along with 90% exact binomial CI. In Cohort 1, maximum CI width is 0.51; in Cohort 2, it is 0.36. Our hypothesis is that the change in CD8+ TCD between TURBT and RC will be about 3 CD8+ T cells / 100 tumor cells within HPF. Up to 43 pts will be enrolled for 36 eligible, treated pts (12:N, 24:N+L). Cohort 1 and 2 have 81% and 98% power, respectively, to detect the hypothesized difference with 1-sided type I error rate of 0.05. Trial is open to accrual in US. Clinical trial information: NCT03532451.

APA, Harvard, Vancouver, ISO, and other styles

9

"Turbo-Prolog: Grundlagen der logischen Programmierung - fortgeschrittene Programmiertechniken - professionelle Anwendungen." Zeitschrift für wirtschaftlichen Fabrikbetrieb 83, no. 5 (May 1, 1988): 227. http://dx.doi.org/10.1515/zwf-1988-830507.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

"Lymex: A program in turbo-prolog for differentiating centroblastic from B-immunoblastic subtype of large cell lymphoma." Cancer Genetics and Cytogenetics 41, no. 2 (September 1989): 259. http://dx.doi.org/10.1016/0165-4608(89)90318-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Turbo prolog"

1

Plicková, Karolina. "Pantomima Alfreda Jarryho." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-326542.

Full text

Abstract:

The aim of this diploma thesis is to employ a theatrological approach to the work of one of the most original and influential Czech pantomime troupes of all time, entitled Pantomima Alfreda Jarryho (the Alfred Jarry Pantomime, AJP). The company was established in 1966 in Prague by two young mime artists Boris Hybner and Ctibor Turba and existed as late as the political liquidation of the troupe in 1972 that came due to the process of the so-called normalization period in the former Czechoslovakia. The thesis consists of four major parts that are divided into several subsections. The first part deals with the historical contexts of the art of mime, both international and domestic. The AJP troupe represents the second generation of Czech pantomime that refused the style of the so-called modern pantomime expressed in the international context by Marcel Marceau and in the Czech context by Ladislav Fialka at the Theatre Na zábradlí (Theatre on the Balustrade). Since there is no monograph strictly based on this theatre, although it played a major role among the newly established small theatres in the sixties (and had an important influence on the poetics of the AJP troupe), we briefly introduce the poetics of both the pantomime company led by Fialka and the drama company led by the director Jan Grossman,...

APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Turbo prolog"

1

Chirlian, Paul M. Turbo PROLOG. London: Merrill, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Turbo prolog primer. Indianapolis, Ind., U.S.A: H.W. Sams, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Yin, Khin Maung. Using Turbo-Prolog. Indianapolis: Que, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Advanced Turbo prolog. Berkeley, Calif: Osborne McGraw-Hill, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Shafer, Dan. Turbo Prolog primer. Indianapolis, Ind: Howard W. Sams, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

McAllister, Mick. Illustrated Turbo prolog. New Delhi: BPB Publications, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Rich, Kelly. Using Turbo prolog. 2nd ed. Berkeley, Calif., U.S.A: Osborne McGraw-Hill, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

W, Solomon David, ed. Using Turbo prolog. Indianapolis, Ind: Que Corp., 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Advanced Turbo Prolog. Berkeley: Osborne McGraw-Hill, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

Using Turbo prolog. Berkeley, Calif: Osborne McGraw-Hill, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Turbo prolog"

1

Justen, Konrad. "Turbo Prolog." In Turbo Prolog — Einführung in die Anwendung, 30–73. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91754-6_4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Justen, Konrad. "Grundelemente von Turbo Prolog." In Turbo Prolog — Einführung in die Anwendung, 23–29. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91754-6_3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Herrmann, Dietmar. "Programmieren in Turbo-Prolog." In Probleme und Lösungen mit Turbo-Prolog, 8–57. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91755-3_3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Herrmann, Dietmar. "Das Turbo-Prolog-System." In Probleme und Lösungen mit Turbo-Prolog, 169–76. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91755-3_5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Justen, Konrad. "Ein Expertensystem mit Turbo Prolog." In Turbo Prolog — Einführung in die Anwendung, 74–92. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91754-6_5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Justen, Konrad. "Grundelemente von Prolog." In Turbo Prolog — Einführung in die Anwendung, 17–22. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91754-6_2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Justen, Konrad. "Automatisches Beweisen." In Turbo Prolog — Einführung in die Anwendung, 1–16. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91754-6_1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Herrmann, Dietmar. "Einleitung." In Probleme und Lösungen mit Turbo-Prolog, 1–3. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91755-3_1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Herrmann, Dietmar. "Verzeichnis der Programme." In Probleme und Lösungen mit Turbo-Prolog, 4–7. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91755-3_2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Herrmann, Dietmar. "Programmbeispiele." In Probleme und Lösungen mit Turbo-Prolog, 58–168. Wiesbaden: Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-91755-3_4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Turbo prolog"

1

Spina, P. R., G. Torella, and M. Venturini. "The Use of Expert Systems for Gas Turbine Diagnostics and Maintenance." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30033.

Full text

Abstract:

In the paper, Expert Systems (ESs) developed to support gas turbine engine maintenance and diagnostics are presented. The ESs are applied to turbofans and Auxiliary Power Units and are developed both in procedural (Visual Basic) and declarative (Turbo Prolog) languages. The paper reports some examples of ES utilization, so highlighting high interactivity and user-friendly interface. Moreover, for each ES, the main working features as well as strong and weak points are put into evidence.

APA, Harvard, Vancouver, ISO, and other styles

2

Badar, M. Affan, and Rao R. Guntur. "A Design Expert System for Full Journal Bearings." In ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium collocated with the ASME 1994 Design Technical Conferences. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/cie1994-0422.

Full text

Abstract:

Abstract Various architectures used in design expert systems are reviewed. An architecture consisting of several stages of grouped rules is employed and its features are discussed. The architecture uses a rule based production system. Different methodologies for designing hydrodynamic journal bearings are reviewed and an integrated and dependable design methodology is developed In this Turbo Prolog program, initially, the user is asked to enter the required prescriptive and functional specifications and the decision-criterion. Knowledge bases pertaining to this design problem are represented appropriately. The design solutions of successive states are examined for any violations of the design constraints. The expert system ‘Fbear’ makes an exhaustive search for all the solutions. Utility value of each of the final solutions is calculated and the design solutions having utility values above a certain limit are printed in an output file. The results of ‘Fbear’ are compared with those of the previous workers to illustrate its usefulness.

APA, Harvard, Vancouver, ISO, and other styles

3

Yang, Saiwei, and Kenny Yu. "Application of Expert System for a Compound Gear Train Design." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0151.

Full text

Abstract:

Abstract A program, written in Turbo-Prolog, was developed to provide a quick and accurate design tool for a compound gear train. The program was based on the expert system methods of backward chaining/ depth first for solution search, fuzzy logic for uncertainty and solution priority, blackboard for opportunistic control of the pc memory space. After initial input of needed information, the system will advise the user some of default design parameters such as the gear module, tooth number, safety factor., et al., by a friendly interactive explanatory facility. The program will then select a suitable material based on the design criteria-bending stress, wearing stress, and material fatigue strength. An optimal solution is then suggested based on the desired design constraints. This package can be used in either an English or a Chinese operating environment. Three examples: lathe gearbox, helical gear set, five speed transmission were illustrated and validated. The program performed the same or compatible solutions to the recommended data in the examples.

APA, Harvard, Vancouver, ISO, and other styles

4

Mishra, R. K., A. K. Mishra, and G. Gouda. "Effect of Environmental Factors on the Performance Characteristics of an Oil Cooling System Designed for a Turbo-Shaft Engine." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59705.

Full text

Abstract:

High rotor speeds of turbo-shaft engines demand an efficient oil cooling system to keep the bearing temperature within the acceptable limit. This makes the oil cooling system to play an important part in engine lubrication circuit and any malfunction or inefficiency of the system will lead to rotor instability and seizure causing power loss and damage to the engine. An oil cooling system has been designed for a 900 kW class turbo-shaft engine. It has undergone system level tests to study the effect of various environmental conditions such as sand ingestion during desert operation, prolong exposure to high humidity and salt-laden atmosphere during marine/coastal area operation, and with growth of fungus on external surfaces, etc. The paper presents the tolerance of the oil cooling system to different adverse environmental factors and highlights their effect on the performance characteristics of the system.

APA, Harvard, Vancouver, ISO, and other styles

5

Marr, Curtis, and Xianguo Li. "Composition and Performance Optimization of Catalyst Layer in a Proton Exchange Membrane Fuel Cell." In ASME 1997 Turbo Asia Conference. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-aa-075.

Full text

Abstract:

The composition and performance optimisation of cathode catalyst platinum and catalyst layer structure in a proton exchange membrane fuel cell has been investigated by including both electrochemical reaction and mass transport process. It is found that electrochemical reactions occur in a thin layer within a few micrometers thick, indicating ineffective catalyst utilization for the present catalyst layer design. The effective use of platinum catalyst decreases with increasing current density, hence lower loadings of platinum are feasible for higher current densities of practical interest without adverse effect on cell performance. The optimal void fraction for the catalyst layer is about 60% and fairly independent of current density, and a 40% supported platinum catalyst yields the best performance amongst various supported catalysts investigated. An optimal amount of membrane content in the void region of the catalyst layer exists for minimum cathode voltage losses due to competition between proton migration through the membrane and oxygen transfer in the void region. The present results will be useful for practical fuel cell designs.

APA, Harvard, Vancouver, ISO, and other styles

6

Eriksson, Robert, Kang Yuan, Sten Johansson, and Ru Lin Peng. "Intersplat Oxidation of Atmospheric Plasma Sprayed MCrAlY Coatings." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26872.

Full text

Abstract:

MCrAlY coatings and thermal barrier coatings (TBC) are commonly used in gas turbines to prolong the life of structural parts. The atmospheric plasma spray (APS) process yields coatings with a typical splat-on-splat structure which oxidizes at intersplat boundaries during high-temperature exposure. A study was performed to establish the influence of intersplat oxidation on Al depletion. It was found that the β-depletion based life may be overestimated by a factor of 1.8–18 if intersplat oxidation is not considered. Two different mechanisms of intersplat oxidation were observed: At high temperature (1050 °C), a fraction of the intersplat boundaries remained in contact with the coating surface and oxidized with the same kinetics as the surface oxides. At lower temperature (900 °C), intersplat oxidation occurred by considerable slower growth rates than surface oxidation. The mechanisms behind intersplat oxide growth was further studied by O diffusion calculations.

APA, Harvard, Vancouver, ISO, and other styles

7

Hadjiyannis, Stavros, Nicolas Charalambous, Antonios Tourlidakis, and Kristis Michaelides. "An Experimental and Computational Study of the Erosion in Submersible Pumps and the Development of a Methodology for Selecting Appropriate Protective Coatings." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60090.

Full text

Abstract:

Solid Particle Erosion is one of the major problems in pump industry, since operation in erosive environment could cause performance alterations of pumps with consequent increased maintenance and running costs, mainly due to the lower efficiency. The research work aimed to study the erosion phenomenon in vertical multistage submersible pumps and develop new coatings as means to prolong their operating life through the reduction of the erosion rate. The mechanical properties of various coatings were examined using nano-indentations, impact tests, 3D-surface topography and Finite Element Analysis. Following a computational performance analysis of a pump stage using CFD software was completed and the experimental results were utilized to calculate the erosion factor k which has been introduced in the Finnie Erosion Model to computationally determine the erosion rate of the pump stage.

APA, Harvard, Vancouver, ISO, and other styles

8

Grein, Roland, Ulrich Ehehalt, and Ingo Balkowski. "Identification of Torsional Natural Frequencies and Damping As Well As Prediction of Stress Amplitudes at a Nuclear Power Train." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64133.

Full text

Abstract:

As the landscape of energy production in Europe and other developed countries undergoes a rapid shift towards renewable energies, such as offshore wind, the use of HVDC (High-Voltage Direct Current) technology is increasing. HVDC converter stations have been reported to potentially cause sub-synchronous torsional interaction (SSTI) with turbo-generators in the grid. This phenomenon implies a negative electrical damping at the turbo-generator which may result in non-attenuating torsional vibrations. This is especially an issue in power grids where the close proximity of the power stations to the HVDC converter stations cannot be avoided. Therefore, in order to ensure safe and stable operation, monitoring of torsional vibrations is required. In this article, a proof-of-concept study of touchless torque sensing at a nuclear power train in Gösgen, Switzerland, is presented. All three sub-synchronous natural frequencies were detected by the torque sensor during a load rejection test and show very good agreement with theoretical predictions based on finite element calculations. Possibilities to devise monitoring and eventually protection systems for torsional vibrations based on this technology are also discussed.

APA, Harvard, Vancouver, ISO, and other styles

9

Thompson, Bruce D., Ben Wainscott, and Jim Mulcahy. "Understanding and Minimizing the Vibratory Response of LM2500 Gas Turbine." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0600.

Full text

Abstract:

Since the introduction of the LM2500 in USN marine use, significant efforts have been made to address vibration issues. From a programmatic standpoint, the main goal has been to reduce vibration levels to prolong engine operating life. These have resulted in the reduction of vibration limits for new engine acceptance, the development of LM2500 trim balance, and engine design changes. From an in-service standpoint, operational use and in-place repairs have resulted in conditions that have exacerbated vibration problems. Developments within the USN gas turbine program to address these issues are presented, including the continuing efforts to understand and minimize both synchronous and non-synchronous vibration. These include optimizing trim balance techniques by understanding structural and bearing considerations, the impact of engine modal response and how engine non-linearities effect the trim balance procedure, and the reduction of non-synchronous factors which include rotating stalls.

APA, Harvard, Vancouver, ISO, and other styles

10

Kosowski, Krzysztof, and Marian Piwowarski. "Experimental Research Into Aerodynamic Forces Leading to Self-Excited Vibrations of Turbine Rotors." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30638.

Full text

Abstract:

The experimental investigation into pressure field in the shroud clearance and rotor trajectory were performed on an one-stage air model turbine of impulse type. Basing on the pressure distribution, the aerodynamic forces and moments were investigated as a function of rotor eccentricity, axial gap, rotor-stator misalignment, rotor speed and turbine load. We obtained the following results: 1. confirmation of the linear correlation between the rotor eccentricity (or rotor-stator misalignment angle) and aerodynamic forces, 2. proof that radial eccentricity influences the average location of the rotor, while the general shape of rotor trajectory remains unchanged, 3. proof that although the axial component of the pressure force is relatively low, the moments exerted by this force should be take into account when total aerodynamic moments are determined.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!