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Government institution · Knoxville · United States

National Transportation Research Center

In research, National Transportation Research Center stands highest in Physical Sciences (#2,925 of 10,670 worldwide) and Engineering (#1,691 of 5,901 worldwide), 2022-now. Relative to its size it is most specialised in Automotive Engineering and Mechanical Engineering (Automotive Engineering is 17.2× its share of world research).

ntrc.govROR OpenAlex
World rank, 2022-now
#11,329
of 22,385 · #8,116 all time
Rank in United States
#1,575
of 3,332
Research works
730
▼ 5% vs 2018-21
Citations
26k
35.9 per fractional work
Top-10% rate
12.9%
all institutions 10.0%
vs its own fields
0.99×
1.00× is exactly expected
Open access
56%
world 40%
International
13%
world 18%
National Transportation Research Center

What is National Transportation Research Center known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #2,925 of 10,670 11.8%189 #2518
EngineeringField #1,691 of 5,901 11.7%143 #1501

Each strip is that field's whole ranked pool, with the notch where National Transportation Research Center sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does National Transportation Research Center work in?

In 2022-now, 92% of research at National Transportation Research Center is in Physical Sciences, 5% in Social Sciences. Its largest fields are Engineering (69%), Materials Science (7%), Environmental Science (4%). It does 2.3× the world's share of Physical Sciences.

Physical Sciences: 213 fractional works · 92.3% of its workEngineering: 158 fractional works · 68.6% of its workElectrical and Electronic Engineering: 48 fractional works · 20.7% of its workMechanical Engineering: 34 fractional works · 14.7% of its workAutomotive Engineering: 21 fractional works · 9.2% of its workControl and Systems Engineering: 16 fractional works · 7.0% of its workBuilding and Construction: 11 fractional works · 4.8% of its workIndustrial and Manufacturing Engineering: 6 fractional works · 2.4% of its workBiomedical Engineering: 5 fractional works · 2.3% of its workCivil and Structural Engineering: 5 fractional works · 2.0% of its workAerospace Engineering: 3 fractional works · 1.4% of its workMechanics of Materials: 3 fractional works · 1.3% of its workComputational Mechanics: 3 fractional works · 1.2% of its workSafety, Risk, Reliability and Quality: 2 fractional works · 1.0% of its workOcean Engineering: 1 fractional works · 0.2% of its workMaterials Science: 16 fractional works · 6.8% of its workMaterials Chemistry: 8 fractional works · 3.3% of its workPolymers and Plastics: 3 fractional works · 1.5% of its workElectronic, Optical and Magnetic Materials: 2 fractional works · 0.9% of its workBiomaterials: 1 fractional works · 0.4% of its workCeramics and Composites: 0 fractional works · 0.2% of its workSurfaces, Coatings and Films: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.2% of its workEnvironmental Science: 10 fractional works · 4.2% of its workEnvironmental Engineering: 4 fractional works · 1.7% of its workHealth, Toxicology and Mutagenesis: 1 fractional works · 0.6% of its workGlobal and Planetary Change: 1 fractional works · 0.6% of its workPollution: 1 fractional works · 0.4% of its workWater Science and Technology: 1 fractional works · 0.3% of its workIndustrial and Manufacturing Engineering: 1 fractional works · 0.3% of its workManagement, Monitoring, Policy and Law: 1 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workComputer Science: 9 fractional works · 4.1% of its workComputer Networks and Communications: 2 fractional works · 0.9% of its workArtificial Intelligence: 2 fractional works · 0.9% of its workComputer Vision and Pattern Recognition: 2 fractional works · 0.7% of its workInformation Systems: 1 fractional works · 0.6% of its workHardware and Architecture: 1 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.5% of its workEnergy: 7 fractional works · 3.1% of its workRenewable Energy, Sustainability and the Environment: 6 fractional works · 2.7% of its workEnergy Engineering and Power Technology: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.0% of its workChemical Engineering: 5 fractional works · 2.1% of its workCatalysis: 3 fractional works · 1.3% of its workFluid Flow and Transfer Processes: 1 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPhysics and Astronomy: 4 fractional works · 1.6% of its workAstronomy and Astrophysics: 1 fractional works · 0.5% of its workStatistical and Nonlinear Physics: 1 fractional works · 0.3% of its workAtomic and Molecular Physics, and Optics: 1 fractional works · 0.2% of its workRadiation: 1 fractional works · 0.2% of its workNuclear and High Energy Physics: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workChemistry: 2 fractional works · 0.9% of its workSpectroscopy: 1 fractional works · 0.5% of its workInorganic Chemistry: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEarth and Planetary Sciences: 2 fractional works · 0.8% of its workAtmospheric Science: 1 fractional works · 0.3% of its workGeology: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.3% of its workMathematics: 0 fractional works · 0.2% of its workSocial Sciences: 10 fractional works · 4.5% of its workSocial Sciences: 7 fractional works · 3.0% of its workTransportation: 6 fractional works · 2.5% of its workSociology and Political Science: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.3% of its workDecision Sciences: 2 fractional works · 0.7% of its workInformation Systems and Management: 1 fractional works · 0.3% of its workManagement Science and Operations Research: 1 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEconomics, Econometrics and Finance: 1 fractional works · 0.3% of its workEconomics and Econometrics: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.0% of its workBusiness, Management and Accounting: 1 fractional works · 0.3% of its workStrategy and Management: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPsychology: 0 fractional works · 0.2% of its workHealth Sciences: 4 fractional works · 1.7% of its workMedicine: 3 fractional works · 1.3% of its workPulmonary and Respiratory Medicine: 2 fractional works · 0.7% of its workSmaller subfields together: 1 fractional works · 0.6% of its workHealth Professions: 0 fractional works · 0.2% of its workDentistry: 0 fractional works · 0.1% of its workVeterinary: 0 fractional works · 0.0% of its workLife Sciences: 3 fractional works · 1.5% of its workBiochemistry, Genetics and Molecular Biology: 2 fractional works · 0.7% of its workMolecular Biology: 1 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.1% of its workAgricultural and Biological Sciences: 1 fractional works · 0.6% of its workPlant Science: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.3% of its workPharmacology, Toxicology and Pharmaceutics: 0 fractional works · 0.1% of its workNeuroscience: 0 fractional works · 0.0% of its workALL ITS WORKNationalTransportation…231fractional works, 2022-now
Life Sciences1%Physical Sciences92%Health Sciences2%Social Sciences5%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 23 fields, with their numbers
    1. Engineering15868.6%
    2. Materials Science166.8%
    3. Environmental Science104.2%
    4. Computer Science94.1%
    5. Energy73.1%
    6. Chemical Engineering52.1%
    7. Physics and Astronomy41.6%
    8. Chemistry20.9%
    9. Earth and Planetary Sciences20.8%
    10. Mathematics00.2%
    1. Social Sciences73.0%
    2. Decision Sciences20.7%
    3. Economics, Econometrics and Finance10.3%
    4. Business, Management and Accounting10.3%
    5. Psychology00.2%
    1. Medicine31.3%
    2. Health Professions00.2%
    3. Dentistry00.1%
    4. Veterinary00.0%
    1. Biochemistry, Genetics and Molecular Biology20.7%
    2. Agricultural and Biological Sciences10.6%
    3. Pharmacology, Toxicology and Pharmaceutics00.1%
    4. Neuroscience00.0%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does National Transportation Research Center specialise in?

Where its research is concentrated relative to its size: Automotive Engineering takes 17.2× the share of its output that it takes of world research.

  1. Automotive EngineeringSubfield · 21.3 works17×
  2. Mechanical EngineeringSubfield · 34.0 works8.0×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.13× its world share, 1 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.13× its world share, 2 worksBiochemistry, Geneti…Neuroscience: 0.03× its world share, 0 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.41× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 6.08× its world share, 5 worksChemical EngineeringChemistry: 0.55× its world share, 2 worksChemistryComputer Science: 0.52× its world share, 9 worksComputer ScienceEarth and Planetary Sciences: 0.50× its world share, 2 worksEarth and Planetary …Energy: 3.42× its world share, 7 worksEnergyEngineering: 4.57× its world share, 158 worksEngineeringEnvironmental Science: 0.84× its world share, 10 worksEnvironmental ScienceMaterials Science: 1.94× its world share, 16 worksMaterials ScienceMathematics: 0.17× its world share, 0 worksMathematicsPhysics and Astronomy: 0.71× its world share, 4 worksPhysics and AstronomyDentistry: 0.30× its world share, 0 worksDentistryHealth Professions: 0.07× its world share, 0 worksHealth ProfessionsMedicine: 0.07× its world share, 3 worksMedicineVeterinary: 0.27× its world share, 0 worksVeterinaryBusiness, Management and Accounting: 0.09× its world share, 1 worksBusiness, Management…Decision Sciences: 0.69× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.15× its world share, 1 worksEconomics, Econometr…Psychology: 0.07× its world share, 0 worksPsychologySocial Sciences: 0.24× its world share, 7 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Chemical Engineering, 6.1×. Every wedge is a field page.

All 23 fields, with their numbers
  1. Chemical Engineering6.08×5 works
  2. Engineering4.57×158 works
  3. Energy3.42×7 works
  4. Materials Science1.94×16 works
  5. Environmental Science0.84×10 works
  6. Physics and Astronomy0.71×4 works
  7. Decision Sciences0.69×2 works
  8. Chemistry0.55×2 works
  9. Computer Science0.52×9 works
  10. Earth and Planetary Sciences0.50×2 works
  11. Pharmacology, Toxicology and Pharmaceutics0.41×0 works
  12. Dentistry0.30×0 works
  13. Veterinary0.27×0 works
  14. Social Sciences0.24×7 works
  15. Mathematics0.17×0 works
  16. Economics, Econometrics and Finance0.15×1 works
  17. Agricultural and Biological Sciences0.13×1 works
  18. Biochemistry, Genetics and Molecular Biology0.13×2 works
  19. Business, Management and Accounting0.09×1 works
  20. Health Professions0.07×0 works
  21. Medicine0.07×3 works
  22. Psychology0.07×0 works
  23. Neuroscience0.03×0 works

What are the most cited papers from National Transportation Research Center?

The most cited paper from National Transportation Research Center is "The metallurgy and processing science of metal additive manufacturing" (William J. Sames, F.A. List, Sreekanth Pannala et al., 2016), with 2,556 citations. Next come "Water desalination using nanoporous single-layer graphene" (1,705) and "Highly oriented carbon fiber–polymer composites via additive manufacturing" (1,517).

Most cited papers
#PaperReleasedCitations
1 The metallurgy and processing science of metal additive manufacturing William J. Sames, F.A. List, Sreekanth Pannala et al. · International Materials Reviews 7 Mar 2016 2,556
2 Water desalination using nanoporous single-layer graphene Sumedh P. Surwade, Sergei N. Smirnov, Ivan Vlassiouk et al. · Nature Nanotechnology Open access 23 Mar 2015 1,705
3 Highly oriented carbon fiber–polymer composites via additive manufacturing Halil Tekinalp, Vlastimil Kunc, Gregorio M. Vélez-García et al. · Composites Science and Technology Open access 15 Oct 2014 1,517
4 Binder jet 3D printing—Process parameters, materials, properties, modeling, and challenges Amir Mostafaei, Amy Elliott, John E. Barnes et al. · Progress in Materials Science Open access 15 Jun 2020 1,091
5 Overview of the Fundamental Reactions and Degradation Mechanisms of NOx Storage/Reduction Catalysts William S. Epling, Larry E. Campbell, Aleksey Yezerets et al. · Catalysis Reviews 8 Nov 2004 902
All 60 most cited papers, with filters and sorting

Which keywords describe research at National Transportation Research Center?

By fractional works in 2022-now, weighted toward what it does more of than the world: Power Electronics, Energy Efficiency, Mechanical Properties, Additive Manufacturing, Renewable Energy, Renewable Energy Integration, Smart Grid and Electric Vehicles.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Power Electronics20▲ 27×8 topics
  2. Energy Efficiency18▲ 8.7×19 topics
  3. Renewable Energy17▲ 5.0×25 topics
  4. Mechanical Properties16▲ 7.1×24 topics
  5. Sustainability14▲ 2.5×17 topics
  6. Additive Manufacturing14▲ 20×6 topics
  7. Renewable Energy Integration12▲ 16×5 topics
  8. Smart Grid11▲ 13×6 topics
  9. Electric Vehicles11▲ 16×4 topics
  10. Environmental Impact11▲ 2.7×19 topics
  11. Thermal Management10▲ 14×5 topics
  12. Microstructure10▲ 8.4×12 topics
  13. Model Predictive Control10▲ 17×5 topics
  14. Polymer Composites10▲ 16×7 topics
  15. Wireless Power Transfer9▲ 44×2 topics
  16. Applications8▲ 13×5 topics
  17. Energy Management8▲ 23×2 topics
  18. 3D Printing8▲ 16×2 topics
  19. Heat Transfer8▲ 6.8×12 topics
  20. Materials7▲ 14×5 topics
  21. Electric Vehicle Charging7▲ 37×2 topics
  22. Control Strategies7▲ 22×3 topics
  23. Ceramics7▲ 20×2 topics
  24. Challenges7▲ 26×1 topic
  25. Fused Deposition Modeling7▲ 28×1 topic
  26. Energy Storage Systems7▲ 21×2 topics
  27. Thermal Comfort6▲ 22×2 topics
  28. Lithium-ion Batteries6▲ 6.5×4 topics
  29. Process Parameters6▲ 25×3 topics
  30. Intelligent Transportation Systems6▲ 17×3 topics
  31. Control Systems6▲ 14×6 topics
  32. Smart Grid Applications6▲ 19×2 topics
  33. Efficiency Optimization6▲ 52×2 topics
  34. Energy Simulation6▲ 27×2 topics
  35. Voltage Control6▲ 33×2 topics
  36. Fault Detection5▲ 17×3 topics
  37. Traffic Flow5▲ 22×2 topics
  38. Material Characterization5▲ 19×2 topics
  39. Metallic Components5▲ 33×1 topic
  40. Selective Laser Melting5▲ 33×1 topic

Which research topics does National Transportation Research Center publish most on?

By volume in 2022-now: Additive Manufacturing and 3D Printing Technologies, Additive Manufacturing Materials and Processes, Energy Harvesting in Wireless Networks and Advanced Battery Technologies Research.

Additive Manufacturing a…7Additive Manufacturing and 3D Printing Technologies: 7 fractional worksAdditive Manufacturing M…5Additive Manufacturing Materials and Processes: 5 fractional worksEnergy Harvesting in Wireless Networks: 5 fractional worksAdvanced Battery Technologies Research: 5 fractional worksBuilding Energy and Comfort Optimization: 5 fractional worksMicrogrid Control and Optimization: 4 fractional worksHVDC Systems and Fault Protection: 4 fractional worksWireless Power Transfer …4Wireless Power Transfer Systems: 4 fractional worksTraffic control and management: 4 fractional worksSmart Grid Energy Management: 4 fractional works
Automotive EngineeringMechanical EngineeringElectrical and Electronic EngineeringBuilding and Construction1 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Additive Manufacturing and 3D Printing Technologies Automotive Engineering 7 works
  2. 2 Additive Manufacturing Materials and Processes Mechanical Engineering 5 works
  3. 3 Energy Harvesting in Wireless Networks Electrical and Electronic Engineering 5 works
  4. 4 Advanced Battery Technologies Research Automotive Engineering 5 works
  5. 5 Building Energy and Comfort Optimization Building and Construction 5 works
  6. 6 Microgrid Control and Optimization Control and Systems Engineering 4 works
  7. 7 HVDC Systems and Fault Protection Electrical and Electronic Engineering 4 works
  8. 8 Wireless Power Transfer Systems Electrical and Electronic Engineering 4 works
  9. 9 Traffic control and management Control and Systems Engineering 4 works
  10. 10 Smart Grid Energy Management Electrical and Electronic Engineering 4 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available55.9%not open44.1%

World: 40% of research is openly available.

with international co-authors13.1%domestic only86.9%

World: 18% is written across borders.

How has National Transportation Research Center's research output changed?

Output in 2022-2025 was 5% lower than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is National Transportation Research Center as a percentage of every work published that year, 0.0012% in 2024.

still counting0.0010%0.0020%National Transportation Research Center0.00100% in 202519801990200020102020

Fractional works of National Transportation Research Center over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting10%20%30%National Transportation Research Center11.2% in 2025all institutions10.0% in 20252020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 29.9% in 2016.

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National Transportation Research Center on Science Explorer

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