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Journal articles on the topic 'NVH'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 March 2023

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1

Steffens, Christoph, Klaus Wolff, Stefan Heuer, and Georg Eisele. "NVH-Zielwertdefinition." MTZ - Motortechnische Zeitschrift 69, no. 11 (November 2008): 928–33. http://dx.doi.org/10.1007/bf03227500.

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2

Charman, Andrew. "NVH matters." Vehicle Dynamics International 2021, no. 2 (December 2021): 12–20. http://dx.doi.org/10.12968/s1479-7747(22)50028-8.

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EVs may be quiet, but that has not simplified the task of NVH refinement. The increasing shift to electric power has resulted in a new direction for NVH engineering, with development still having to address the suppression of noise, but now alongside its enhancement

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3

Shah, Hardik. "Introduction to Ansys NVH solutions focusing on the Vibro Acoustics." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A235. http://dx.doi.org/10.1121/10.0016123.

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Product validation focusing on NVH heavily relies on physical testing which put NVH focused validation on right hand side of the Product Validation Process. Due to this, lot many times design changes are not possible or expensive or time consuming which reduces overall product quality. Industries like Automotives and ground transportation, Aero and Defense, High Tech, Industrial products making huge investments on NVH validation to win over customer perception battle. Ansys geared up in providing industry leading NVH Solution with Mechanical, LS-Dyna, Motion, Sound along with other products like Maxwell, Fluent, Optislang. NVH workflows driven by highly correlated simulation models, Integration of our key industry leading technologies and Guided, Automated, DOE friendly, Cloud native NVH Solutions are our TOP 3 goals. To introduce Ansys NVH Solutions focusing on the Vibro-Acoustics to Acoustical Society of America communities, we will cover key capabilities from different products briefly and demonstrate NVH Workflows in detail. Electric Motor NVH Simulation—Excitation generated due to Electro Magnetic forces Powertrain/Driveline/Gearbox NVH Simulation—Excitation generated due to multi body dynamics simulationFan NVH Simulation—Excitation generated due to structural vibration of fan driven by flow simulation.

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4

Reinberg, Stephan, Eberhard Wagner, Wolfgang Siegl, Bernd Felgner, Roger Schwolow, and Bernd Pfingsten. "NVH UND AERODYNAMIK." ATZextra 17, no. 1 (April 2012): 94–103. http://dx.doi.org/10.1365/s35778-012-0687-6.

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5

Alt, Norbert, Klaus Wolf, and Eugen Braun. "NVH powertrain mounting." ATZ worldwide 104, no. 1 (January 2002): 17–20. http://dx.doi.org/10.1007/bf03224535.

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6

Yue, Ming Yue, and Yi Dan Zhou. "Research Progress on Vehicle NVH Technology." Applied Mechanics and Materials 654 (October 2014): 400–403. http://dx.doi.org/10.4028/www.scientific.net/amm.654.400.

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Vehicle NVH phenomena is one of the most important phenomenaabout vehicle comfort, this paper proposed the existence of vehicle NVH problems, analyzed the causes of vehicle NVH and the transmission paths, IntroducedNVH control methods,and made the futureprospects of NVH.

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7

Qatu, M., M. Sirafi, and F. Johns. "Robustness of powertrain mount system for noise, vibration and harshness at idle." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 216, no. 10 (October 1, 2002): 805–10. http://dx.doi.org/10.1177/095440700221600103.

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Noise, vibration and harshness (NVH) has become an increasingly important attribute in vehicle engineering. At idle conditions, customer-perceived NVH is dominated by powertrain NVH. Powertrain NVH can be radiated engine noise or noise (and vibration) transmitted through the powertrain mounting system. This paper discusses the variability in the latter NVH as a function of the variability of the mount stiffness parameters. A simple six-degree-of-freedom model is used in the analysis. A detailed design of experiment studies was conducted. It is concluded that better control of mount stiffness parameters would result in improved prediction and performance of idle NVH.

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8

Mira, Horiba. "Good NVH sells vehicles." Vehicle Dynamics International 2021, no. 2 (December 2021): 49. http://dx.doi.org/10.12968/s1479-7747(22)50040-9.

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9

Cloyed, Carl S., and Perri K. Eason. "Feeding limitations in temperate anurans and the niche variation hypothesis." Amphibia-Reptilia 38, no. 4 (2017): 473–82. http://dx.doi.org/10.1163/15685381-00003131.

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The niche variation hypothesis (NVH) states that populations with wider niches are more phenotypically variable. The NVH has important ecological and evolutionary implications but has been controversial since its inception. Recent interpretations have supported the NVH by directly comparing among-individual diet variation with population dietary niche breadth. Traditional studies of the NVH focused on morphological traits as proxies of niche variation, with contradictory results. Gape-limited predators may be relatively likely to show effects of morphological variation on diet breadth because gape size can strongly limit diet. We used five anurans to test NVH predictions, including three true frogs, Rana catesbeiana, R. clamitans, and R. sphenocephala, and two toads, Anaxyrus americanus and A. fowleri. We combined recent and traditional approaches by comparing both individual variation in diet and variation in gape width with dietary niche breadth. We found support for the NVH within two species of the three true frogs but not for either toad species, a difference likely driven by greater strength of the feeding limitation caused by gape width in the frogs. Toads had higher gape width to snout-vent length ratios, reducing the strength of the feeding limitation imposed by gape width. We found strong support for the NVH among species; species with more among-individual variation in diet and species with more variation in gape width had broader niches. Our results highlight the circumstances under which the NVH is applicable and demonstrate an example in which the NVH is supported through both traditional and recent interpretations.

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10

Wang, Yongchao, Hui Gao, Haiyang Wang, and Wenpeng Ma. "NVH Optimization Analysis of Permanent Magnet Synchronous Motor by Rotor Slotting." Vehicles 2, no. 2 (May 20, 2020): 287–302. http://dx.doi.org/10.3390/vehicles2020016.

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With the development of new energy vehicles, the NVH (Noise, Vibration, Harshness) performance of the permanent magnet synchronous motors (PMSM) for vehicles has attracted more and more attention. The rotor slotting optimization analysis is the critical issue in the NVH performance study of PMSM. In this paper, the theoretical formula of the PMSM radial electromagnetic force is presented. Based on which, the spatial order and frequency order characteristics of the radial force of a 6-pole 36-slot PMSM are analyzed. Firstly, electromagnetic simulation of the motor is carried out, and the specific force components, which may cause an NVH problem, is extracted. Secondly, the harmonics are calculated with a method of freezing the relative magnetic permeability. Thirdly, the motor is optimized by rotor slotting to reduce the amplitudes of these harmonics, and the effect on electromagnetic noise is analyzed in theory and simulation. Finally, the NVH test in original state and after rotor slotting state was performed in the semi-anechoic chamber. The accuracy of the theory and simulation was verified based on the comparison of the measured noise data. This paper provides a new NVH optimization idea, this method can quickly locate the fundamental problem location of electromagnetic NVH, provide a fast channel for electromagnetic NVH optimization from simulation to verification, and improve the optimization efficiency of NVH.

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11

Schlegel, Jennifer. "Responsibility in NVH Development." ATZautotechnology 8, no. 7 (July 2008): 46–49. http://dx.doi.org/10.1007/bf03247069.

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12

Steffens, Christoph, Klaus Wolff, Stefan Heuer, and Georg Eisele. "NVH target value definition." MTZ worldwide 69, no. 11 (November 2008): 18–22. http://dx.doi.org/10.1007/bf03226925.

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13

BENNOUNA, SAAD. "NVH investigation of automotive HVAC brushless motors." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 6 (February 1, 2023): 1751–60. http://dx.doi.org/10.3397/in_2022_0248.

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In the automotive industry, thermal systems are of critical importance in securing optimum vehicle operating, preserving battery capacities and ensuring passenger comfort. These systems involve a wide range of components with various technologies, designs and more innovation. Currently, thermal engine market shares are decreasing as facing increasing electrification trends worldwide. Consequently, thermal systems may become major sources of noise and vibration that may emerge inside the car cabin. This may cause significant discomfort to passengers and can create disturbances to passersby outside the car. As a system supplier, Valeo ensures NVH compliance according to internal standards and OEM specifications during development and production stages. However, as electrification trends involve more and more innovations with less technical background, ensuring NVH compliance becomes a formidable challenge to deal with. Among the main NVH sources, the HVAC Brushless motor is highly critical as implanted inside the car cabin. This paper focuses on the main NVH topics encountered on HVAC BLDC motors. First, the NVH sources are analyzed from mechanical and magnetic design perspectives. Furthermore, solutions to control the NVH behavior are presented which sets the product's intrinsic limitations and operating conditions. Finally, from a technical compliance perspective, specification design implications are discussed.

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14

Kropp, Andreas, and Daniel Heiserer. "Efficient Broadband Vibro-Acoustic Analysis of Passenger Car Bodies Using an FE-Based Component Mode Synthesis Approach." Journal of Computational Acoustics 11, no. 02 (June 2003): 139–57. http://dx.doi.org/10.1142/s0218396x03001870.

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The costliest part of computationally optimizing automobiles for Noise, Vibration and Harshness (NVH) is the frequency response calculation of very large finite element models. In general, NVH is treated as a fluid-structure interaction between the body and the car interior fluid volume. In this paper, some features of the current approach to NVH computations at BMW are elucidated. First, the equations of motion for a typical NVH problem will be derived using three different formulations, differential, algebraic and modal. Next, three numerical approaches for solving the large systems of equations (direct, modal and Automated Multi-Level Substructuring (AMLS)) will be shown. Finally, the numerical precision and the efficiency of these approaches will be assessed.

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15

Brouckaert, Richard. "Automotive OEM acoustics - the ideal application for carbon neutral solutions." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 264, no. 1 (June 24, 2022): 917–24. http://dx.doi.org/10.3397/nc-2022-835.

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The Automotive acoustics arena is rich with application opportunities for carbon neutral or climate positive parts. Designing possible "green" NVH solutions however must never compromise the intended acoustical performance of the parts. This paper investigates the acoustical needs of OEM vehicles with an emphasis on applying green solutions. Furthermore, it demonstrates that vehicular acoustic performance need not be compromised as the industry moves down the road towards more climate friendly initiatives. This paper details that the traditional NVH treatment packages can easily be modified to create NVH solutions that quiet the vehicle without negatively affecting the planet. Lastly, the paper will identify what the writer considers to be ideal applications for planet friendly, carbon neutral NVH solutions using acoustical barrier applications specifically, that are production ready and commercially available today.

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16

Sun, Zhaohui, Glen Steyer, Chih Hung Chung, and Gregory Kopp. "NVH Development of Aluminum Axles." SAE International Journal of Passenger Cars - Mechanical Systems 8, no. 2 (June 15, 2015): 748–53. http://dx.doi.org/10.4271/2015-01-2188.

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17

Hoffrichter, Wolfgang, Enrique Wegmann, and Axel Stenkamp. "Simulative NVH-Entwicklung von Bremsbelägen." ATZ - Automobiltechnische Zeitschrift 113, no. 12 (November 25, 2011): 934–39. http://dx.doi.org/10.1365/s35148-011-0218-6.

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18

Buchberger, Reinhard, Oliver Grieshofer, Walter Hinterberger, and Roman Sereinig. "NVH-Entwicklungsprozess für elektrische Antriebe." ATZ - Automobiltechnische Zeitschrift 119, no. 10 (September 20, 2017): 26–31. http://dx.doi.org/10.1007/s35148-017-0113-x.

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19

Reichenbach, Michael. "Less Noise and Optimized NVH." ATZ worldwide 120, no. 7-8 (July 2018): 10–11. http://dx.doi.org/10.1007/s38311-018-0112-x.

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20

Steffens, Christoph, Georg Eisele, Georg Hanses, and Johann Kartal. "Fahrzeugintegration und NVH eines Dreizylindermotors." ATZ - Automobiltechnische Zeitschrift 116, no. 11 (October 2014): 44–49. http://dx.doi.org/10.1007/s35148-014-0511-2.

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21

Kirchner, Eckhard, Klaus Hartmut Köster, Frank Langer, Andreas Nicola, and Bernd Sauer. "NVH-Problemen auf der Spur." ATZ - Automobiltechnische Zeitschrift 107, no. 9 (September 2005): 802–9. http://dx.doi.org/10.1007/bf03223132.

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22

Böttcher, Thomas, Michael Kwade, and Lutz Eckstein. "NVH-gerechter Entwicklungsprozess für Fahrwerkssysteme." ATZ - Automobiltechnische Zeitschrift 125, no. 1 (December 30, 2022): 44–48. http://dx.doi.org/10.1007/s35148-022-1539-3.

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23

Song, Daehun, Seongeun Hong, Jaejoon Seo, Kyounghoon Lee, and Youngeun Song. "Correlation Analysis of Noise, Vibration, and Harshness in a Vehicle Using Driving Data Based on Big Data Analysis Technique." Sensors 22, no. 6 (March 14, 2022): 2226. http://dx.doi.org/10.3390/s22062226.

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A new development process for the noise, vibration, and harshness (NVH) of a vehicle is presented using data analysis and machine learning with long-term NVH driving data. The process includes exploratory data analysis (EDA), variable importance analysis, correlation analysis, sensitivity analysis, and development target selection. In this paper, to dramatically reduce the development period and cost related to vehicle NVH, we propose a technique that can accurately identify the precise connectivity and relationship between vehicle systems and NVH factors. This new technique uses whole big data and reflects the nonlinearity of dynamic characteristics, which was not considered in existing methods, and no data are discarded. Through the proposed method, it is possible to quickly find areas that need improvement through correlation analysis and variable importance analysis, understand how much room noise increases when the NVH level of the system changes through sensitivity analysis, and reduce vehicle development time by improving efficiency. The method could be used in the development process and the validation of other deep learning and machine learning models. It could be an essential step in applying artificial intelligence, big data, and data analysis in the vehicle and mobility industry as a future vehicle development process.

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24

Bischof, Wolfgang, Florian Draeger, Martin Hennen, and Ralph Kennel. "Operating Point Adaptation for NVH-Optimization of Induction Machines." World Electric Vehicle Journal 9, no. 1 (June 7, 2018): 10. http://dx.doi.org/10.3390/wevj9010010.

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Inverter-fed drive systems are mostly optimized to operate at the best efficiency, neglecting the possibility of acoustic optimization. The chosen operating point can lead to undesired harmonics involving vibrations and noises of the electrical drive. In order to optimize the system with respect to acoustics, the given operating point for best efficiency is left and a noise, vibration and harshness (NVH)-optimized operating point is chosen. This paper shows the influence of the operating point on NVH, describes an NVH-optimized control and draws a comparison between simulation and measurement.

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25

Chen, Hong Jiang, and Yue Hai Wu. "The Application of the Finite Element in the Vehicle NVH Field." Advanced Materials Research 580 (October 2012): 310–14. http://dx.doi.org/10.4028/www.scientific.net/amr.580.310.

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The articles establish the dynamic model of the vehicle with the finite element software, and simulate the structural modes, acoustic modes, driving the NHV performance of ride comfort, and proposed improvement program. Practice has proved that the application of finite element analysis software can simulate the vehicle NVH performance and provide fast and accurate basis to improve its performance.

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26

Hua, Xia, Alan Thomas, and Kurt Shultis. "Recent progress in battery electric vehicle noise, vibration, and harshness." Science Progress 104, no. 1 (January 2021): 003685042110052. http://dx.doi.org/10.1177/00368504211005224.

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As battery electric vehicle (BEV) market share grows so must our understanding of the noise, vibration, and harshness (NVH) phenomenon found inside the BEVs which makes this technological revolution possible. Similar to the conventional vehicle having encountered numerous NVH issues until today, BEV has to face many new and tough NVH issues. For example, conventional vehicles are powered by the internal combustion engine (ICE) which is the dominant noise source. The noises from other sources were generally masked by the combustion engine, thus the research focus was on the reduction of combustion engine while less attention was paid to noises from other sources. A BEV does not have ICE, automatic transmission, transfer case, fuel tank, air intake, or exhaust systems. In their place, there is more than enough space to accommodate the electric drive unit and battery pack. BEV is quieter without a combustion engine, however, the research on vehicle NVH is even more significant since the elimination of the combustion engine would expose many noise behaviors of BEV that were previously ignored but would now seem clearly audible and annoying. Researches have recently been conducted on the NVH of BEV mainly emphasis on the reduction of noise induced by powertrain, tire, wind and ancillary system and the improvement of sound quality. This review paper will focus on recent progress in BEV NVH research to advance the BEV systems in the future. It is a review for theoretical, computational, and experimental work conducted by both academia and industry in the past few years.

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27

Elsherif, Noha Ibrahim, Abdulaziz Mohsen Al-Mahallawi, Abdelfattah Ahmed Abdelkhalek, and Rehab Nabil Shamma. "Investigation of the Potential of Nebivolol Hydrochloride-Loaded Chitosomal Systems for Tissue Regeneration: In Vitro Characterization and In Vivo Assessment." Pharmaceutics 13, no. 5 (May 11, 2021): 700. http://dx.doi.org/10.3390/pharmaceutics13050700.

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In this study, we evaluated the synergistic effect of nebivolol hydrochloride (NVH), a third-generation beta-blocker and NO donor drug, and chitosan on the tissue regeneration. Ionic gelation method was selected for the preparation of NVH-loaded chitosomes using chitosan lactate and sodium tripolyphosphate. The effect of different formulation variables was studied using a full factorial design, and NVH entrapment efficiency percentages and particle size were selected as the responses. The chosen system demonstrated high entrapment efficiency (73.68 ± 3.61%), small particle size (404.05 ± 11.2 nm), and good zeta potential value (35.6 ± 0.25 mV). The best-achieved formula demonstrated spherical morphology in transmission electron microscopy and amorphization of the crystalline drug in differential scanning calorimetry and X-ray diffraction. Cell culture studies revealed a significantly higher proliferation of the fibroblasts in comparison with the drug suspensions and the blank formula. An in vivo study was conducted to compare the efficacy of the proposed formula on wound healing. The histopathological examination showed the superiority of NVH-loaded chitosomes on the wound proliferation and the non-significant difference in the collagen deposition after 15 days of the injury to that of intact skin. In conclusion, NVH-loaded chitosomes exhibited promising results in enhancing skin healing and tissue regeneration.

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28

John, Joseph B., Saliya Wijeyaratne, and Mark Speakman. "Impact of the 2015 NICE guidance for urgent assessment of patients with non-visible haematuria." Journal of Clinical Urology 13, no. 1 (September 6, 2019): 56–61. http://dx.doi.org/10.1177/2051415819872910.

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Objectives: To assess the impact of the 2015 National Institute of Health and Care Excellence (NICE) guidance for referral of non-visible haematuria (NVH) and to compare diagnostic findings in patients referred using 2005 and 2015 guidance. Patients and method: Review of the referral details and diagnostic findings for urgent NVH referrals was assessed over a 27-month period. Referrals continued to be received under 2005 and 2015 NICE guidance during this period, and the diagnostic findings from each pathway were compared. Results: The number of urgent haematuria referrals reduced by 34% over the 27-month period. NVH referrals fell from 144 in the first quarter to 30 in the last quarter. The transitional cell carcinoma (TCC) diagnosis rate was low in patients referred using 2005 and 2015 criteria (1.7 and 1.9% respectively). No muscle-invasive bladder cancer (MIBC) was diagnosed. There was a high rate of benign urological findings. Non-adherence to referral criteria was high in the 2015 pathway (56%). Conclusion: The reduction in NVH referrals following introduction of 2015 NICE guidance could allow resource re-allocation. Low adherence to referral criteria should be investigated. The absence of MIBC and low rate of TCC diagnosis is reassuring and consideration should be given to investigating NVH patients semi-urgently. Level of evidence: 2C

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29

Bang, Tae-Kyoung, Kyung-Hun Shin, Jeong-In Lee, Hoon-Ki Lee, Han-Wook Cho, and Jang-Young Choi. "Experimental and Comparative Study of Rotor Vibrations of Permanent Magnet Machines with Two Different Fractional Pole/Slot Combinations." Applied Sciences 10, no. 24 (December 9, 2020): 8792. http://dx.doi.org/10.3390/app10248792.

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This study deals with the noise, vibration, and harshness (NVH) characteristic analysis of permanent magnet synchronous motors (PMSMs) for electrical machines, such as electrically driven tools that are used in industries. An improved NVH design is needed for application to industrial tools. In general, the electromagnetic NVH characteristics of PMSMs are classified into electromagnetic excitation sources, such as total harmonic distortion of EMF, torque pulsation, magnetic pull force, and unbalanced magnetic force (UMF). This study compares the vibration and noise generated by fractional pole/slot combinations. In PMSMs with fractional pole/slot combinations, UMF is an important NVH source. PMSMs generate UMF because of armature reaction fields based on the pole/slot combinations and harmonics of magnetic flux density. UMF was derived using the finite element method, and the rotor vibration analysis was performed using electromagnetic mechanical coupling analysis. The analysis results and the effect of electromagnetic excitation characteristics on the rotor vibration of the PMSMs were compared and analyzed.

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30

Kim, Jang-Su. "Engine Mounting System Optimization for Improve NVH." Journal of the Korea Academia-Industrial cooperation Society 14, no. 10 (October 31, 2013): 4665–71. http://dx.doi.org/10.5762/kais.2013.14.10.4665.

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31

Ab Aziz, Shamsul Akmar, Risby Mohd Sohaimi, Muhammad Hazwan Pu’ad, and Mohd Abdullah Mohd Yaman. "Noise, Vibration and Harshness (NVH) Study on Malaysian Armed Forces (MAF) Tactical Vehicle." Applied Mechanics and Materials 165 (April 2012): 165–69. http://dx.doi.org/10.4028/www.scientific.net/amm.165.165.

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Noise, Vibration and Harshness (NVH) is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. NVH parameters which consist of noise (unwanted sound), vibration (mechanical oscillation) and harshness (severity or discomfort of noise or vibration) need to be evaluated in order to improve comfort and safety levels for vehicle occupants. In this paper, NVH study was conducted on Malaysian Armed Forces (MAF) tactical vehicles in order to ensure that the vehicles meet the requirements of the Occupational Safety and Health Administration (OSHA) and Directive 2002/44/EC. The project aim was to identify the preferable solution that can improve the NVH parameters of the vehicles in accordance to the standard and test protocols. A 4x4 Troop Transporter vehicle which carried 8 persons at the rear cabin was used in the NVH testing. The vibration parameters studied are hand arm vibration (HAV), focussing on vibration on the steering wheels of the vehicle, and whole body vibration (WBV), focussing on vibration on the seats. For noise, it was measured at the driver cabin and rear cabin of the vehicles. From the results, the HAV value for driver during idle speed was found to be higher than the others velocity. For WBV, vibration value for passenger 1 in rear cabin was highest compared to the other WBV test points.

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Starmer, Benjamin Zak, Amal Singh, and Stephen Bromage. "The negative predictive value of a negative repeat urinalysis in patients presenting with haematuria: A review of 1138 patients." Journal of Clinical Urology 10, no. 5 (June 1, 2017): 471–75. http://dx.doi.org/10.1177/2051415817711633.

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Objective: Haematuria may be transient for a number of benign conditions, particularly a urinary-tract infection (UTI). We set out to determine if a negative repeat urinalysis at the time of urological assessment for patients with haematuria could predict negative investigations and whether investigations could be tailored by this test. Methods: This was a retrospective analysis of records for all patients attending a haematuria clinic between 16 September 2013 and 12 September 2014. This included patients with visible and non-visible (microscopic) haematuria. Results: There were 1138 patients, 599 with visible haematuria (VH) and 460 with non-visible haematuria (NVH). Seventy-two patients were excluded. A total of 546 patients had a positive repeat urinalysis for blood; 438 patients had a negative repeat urinalysis when tested at the haematuria clinic, 298/599 for VH and 140/460 NVH. For those who had negative repeat urinalysis, urothelial cancer was found in 15/298 VH and 1/140 NVH. The one patient with negative repeat urinalysis and NVH was found to have a grade 2 (high grade) bladder tumour. The negative predictive value for a negative repeat urinalysis in transient haematuria was 0.95 for VH and 0.99 for NVH. Twenty-nine patients with VH and repeat negative urinalysis on assessment had a positive urine culture suggesting a UTI as a cause. None of these patients was found to have urothelial cancer ( p = 0.0413). Conclusion: Patients who experience transient VH and subsequent repeat negative urinalysis in the absence of infection have a 5% chance of urothelial cancer and should still be investigated. For those with transient NVH, the probability of finding a urothelial cancer is <1%, although we did find a high-grade bladder tumour in this group. If patients have a positive urine culture and a negative repeat urinalysis following treatment, they could be spared haematuria investigations.

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Guinebretière, Marie-Hélène, Sandrine Auger, Nathalie Galleron, Matthias Contzen, Benoit De Sarrau, Marie-Laure De Buyser, Gilles Lamberet, et al. "Bacillus cytotoxicus sp. nov. is a novel thermotolerant species of the Bacillus cereus Group occasionally associated with food poisoning." International Journal of Systematic and Evolutionary Microbiology 63, Pt_1 (January 1, 2013): 31–40. http://dx.doi.org/10.1099/ijs.0.030627-0.

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An aerobic endospore-forming bacillus (NVH 391-98T) was isolated during a severe food poisoning outbreak in France in 1998, and four other similar strains have since been isolated, also mostly from food poisoning cases. Based on 16S rRNA gene sequence similarity, these strains were shown to belong to the Bacillus cereus Group (over 97 % similarity with the current Group species) and phylogenetic distance from other validly described species of the genus Bacillus was less than 95 %. Based on 16S rRNA gene sequence similarity and MLST data, these novel strains were shown to form a robust and well-separated cluster in the B. cereus Group, and constituted the most distant cluster from species of this Group. Major fatty acids (iso-C15 : 0, C16 : 0, iso-C17 : 0, anteiso-C15 : 0, iso-C16 : 0, iso-C13 : 0) supported the affiliation of these strains to the genus Bacillus , and more specifically to the B. cereus Group. NVH 391-98T taxon was more specifically characterized by an abundance of iso-C15 : 0 and low amounts of iso-C13 : 0 compared with other members of the B. cereus Group. Genome similarity together with DNA–DNA hybridization values and physiological and biochemical tests made it possible to genotypically and phenotypically differentiate NVH 391-98T taxon from the six current B. cereus Group species. NVH 391-98T therefore represents a novel species, for which the name Bacillus cytotoxicus sp. nov. is proposed, with the type strain NVH 391-98T ( = DSM 22905T = CIP 110041T).

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Balasubramanian, Murali, and Ahmed Shaik. "Optimizing Body Panels for NVH Performance." SAE International Journal of Passenger Cars - Mechanical Systems 8, no. 3 (June 15, 2015): 948–55. http://dx.doi.org/10.4271/2015-01-2265.

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35

Brohmer, Andreas, Jörg Kemmerling, Jakob Nehl, Stefan Heuer, and Eugen Schäfer. "NVH-Entwicklungsaspekte bei Ottomotoren mit Direkteinspritzung." MTZ - Motortechnische Zeitschrift 63, no. 11 (November 2002): 906–13. http://dx.doi.org/10.1007/bf03226659.

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Alt, Norbert, Thomas Lichtenberg, Jakob Nehl, Stefan Heuer, and Rainer Thiele. "NVH-related diesel cold start calibration." MTZ worldwide 65, no. 4 (April 2004): 7–10. http://dx.doi.org/10.1007/bf03227663.

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Graeff, Lorenz, Yuriy Kandinov, and Simon Redfearn. "NVH-Prüfstand zur Integration von Lenksystemen." ATZ - Automobiltechnische Zeitschrift 120, no. 1 (December 29, 2017): 54–59. http://dx.doi.org/10.1007/s35148-017-0159-9.

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Koch, Franz, Michael Kellner, Christian Petersen, and Benjamin Queck. "Vergleich des NVH-Verhaltens von Elektrofahrzeugen." ATZ - Automobiltechnische Zeitschrift 120, no. 7-8 (July 2018): 12–17. http://dx.doi.org/10.1007/s35148-018-0071-y.

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Reichenbach, Michael. "Akustik Weniger Geräusche und optimiertes NVH." ATZ - Automobiltechnische Zeitschrift 120, no. 7-8 (July 2018): 10–11. http://dx.doi.org/10.1007/s35148-018-0079-3.

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Kruse, Enrico, and Michael Reichenbach. ""Partnerships on NVH foster mutual learning"." ATZ worldwide 122, no. 6 (May 29, 2020): 22–25. http://dx.doi.org/10.1007/s38311-020-0259-0.

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Buchberger, Reinhard, Oliver Grieshofer, Walter Hinterberger, and Roman Sereinig. "NVH Development Process for E-drives." ATZ worldwide 119, no. 10 (September 29, 2017): 26–31. http://dx.doi.org/10.1007/s38311-017-0103-3.

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French, M., and M. Jay. "AN INTRODUCTION TO AUTOMOTIVE NVH TESTING." Experimental Techniques 22, no. 4 (July 1998): 32–33. http://dx.doi.org/10.1111/j.1747-1567.1998.tb02336.x.

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Höfler, Dieter, and Stefan Maxl. "NVH-Prüfstand für hochdrehende E-Motoren." MTZ - Motortechnische Zeitschrift 82, no. 1 (December 11, 2020): 48–53. http://dx.doi.org/10.1007/s35146-020-0606-0.

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Van Keymeulen, Johan, Christof Nussmann, Christoph Steffens, and Georg Eisele. "Auslegung von Motorlagern aus NVH-Sicht." ATZ - Automobiltechnische Zeitschrift 118, no. 3 (February 17, 2016): 26–31. http://dx.doi.org/10.1007/s35148-015-0204-5.

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Alt, Norbert, Klaus Wolf, and Eugen Braun. "NVH-Motorlagerung Vom Konzept zur Kalibrierung." ATZ - Automobiltechnische Zeitschrift 104, no. 1 (January 2002): 56–66. http://dx.doi.org/10.1007/bf03224387.

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Yu, Peng, Tong Zhang, and Pu Hui Liu. "NVH Prediction of Electric Vehicle Driving Motor Base on Radial Electromagnetic Force Analysis." Advanced Materials Research 608-609 (December 2012): 1537–40. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.1537.

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Abstract:

This paper takes PMSM of EV as research object. Radial electromagnetic force analysis, housing modal analysis and NVH prediction are conducted. Radial electromagnetic force order and frequency are obtained by theoretical calculation, numerical verification is executed using Ansoft software. Modal characteristics are obtained by FEA numerical simulation. Combined the results of the electromagnetic analysis with modal simulation, the NVH performance is investigated.

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Plättner, David. "E-Kompressoren entkoppeln." Lärmbekämpfung 16, no. 05 (2021): 154–55. http://dx.doi.org/10.37544/1863-4672-2021-05-24.

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Vibracoustic, ein weltweit führender Anbieter von NVH-Lösungen (Noise, Vibration and Harshness) für die Automobilindustrie, hat ein innovatives neues Entkopplungssystem für elektrische Kompressoren in modernen Elektrofahrzeugen und Plug-in-Hybrid- Fahrzeugen auf den Markt gebracht. Die neue Lösung adressiert viele der NVH-Herausforderungen, mit denen Fahrzeughersteller konfrontiert sind, wenn es darum geht, das Wärmemanagement der Batterien zu optimieren und gleichzeitig übermäßige Geräusche und Vibrationen von extrem beanspruchten E-Kompressoren auszugleichen.

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Nowers, Jennifer, Mark Kitchen, Sneha Rathod, Sharbathana Nageswaren, Caroline Lipski, Shahjahan Aslam, and Anurag Golash. "Is Flexible Cystoscopy Necessary in the Investigation of Non-visible Haematuria?" Journal of Endoluminal Endourology 4, no. 2 (June 22, 2021): e7-e12. http://dx.doi.org/10.22374/jeleu.v4i2.124.

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Background: Historic evidence suggests up to 16% (approximately) of non-visible haematuria (NVH) referrals result in Urological cancer diagnosis. The majority are bladder cancers, for which flexible cystoscopy is regarded the “gold standard” diagnostic procedure. Recent changes to suspected cancer referral guidelines, public information campaigns and reduced smoking prevalence may have changed this percentage. We retrospectively calculated cancer detection rates from NVH referrals to assess whether flexible cystoscopy,an invasive and morbid procedure, remains necessary.Patients and methods: All patients referred to our University teaching hospital on a suspected (“two-week”) cancer pathway with NVH over a 16-week period were included. Clinical and demographic data were collected for a series of 200 patients (96 male, age range 27–92, median 68).Results: Only eight patients had urological malignancy found (two renal and six bladder cancers). Both renal, and four bladder cancers, were identified on imaging prior to flexible cystoscopy. Only two bladder cancers were therefore detected by cystoscopy; one low-risk non-muscle invasive (patient has already been discharged) and one in a patient that was unfit for treatment (died of heart failure). Only seven (3.5%) of the patients were offered the option of not undergoing flexible cystoscopy.Conclusion: Our analyses suggest that flexible cystoscopy is rarely of benefit in patients with NVH. We suggest that patients should be given an accurate risk of bladder cancer diagnosis during the consent process. We advocate that flexible cystoscopy can be avoided for the majority of NVH referrals, particularly in patients without strong risk factors for urothelial cell carcinoma. Avoidance of flexible cystoscopy would reduce patient risks from procedural morbidity, reduce risks of acquiring coronavirus from hospital attendance, and there could be huge reductions in financial and service delivery demands in an overstretched secondary-care service.

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Kim, Tae Ho, Chang Gook Moon, Sung Ho Hwang, Jongsung Lee, Gun Woong Park, Hyun Sup Yang, Kyoung-Ku Ha, and Chang Ha Lee. "Identification of NVH Characteristics of Air Compressor for Fuel Cell Electric Vehicles." Transactions of the Korean Society for Noise and Vibration Engineering 29, no. 3 (June 20, 2019): 368–78. http://dx.doi.org/10.5050/ksnve.2019.29.3.368.

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Rust, Alfred, and Bernhard J. Graf. "NVH of Electric Vehicles with Range Extender." SAE International Journal of Passenger Cars - Mechanical Systems 3, no. 1 (June 9, 2010): 860–67. http://dx.doi.org/10.4271/2010-01-1404.

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