• Acoustic analysis of small engine catalytic converters : SAE 2010-32-0022Lavrentjev, Jüri; Rämmal, HansSAE technical papers2010 / [12] p
• Acoustic studies of micro-perforates for small engine silencersKabral, Raimo; Rämmal, Hans; Lavrentjev, JüriSAE technical papers2012 https://www.sae.org/publications/technical-papers/content/2012-32-0107/
• Acoustic studies on small engine silencer elementsKabral, Raimo; Rämmal, Hans; Lavrentjev, Jüri; Auriemma, FabioSAE technical papers2011 / [8] p. : ill
• Acoustic study of multi-layered microperforated elements for fibreless noise control applicationsVillau, Margus; Rämmal, Hans; Lavrentjev, JüriIOP conference series : materials science and engineering2021 / art. 012015, 7 p. : ill https://doi.org/10.1088/1757-899X/1140/1/012015
• Acoustic study of novel eco-friendly material for vehicle NVH applicationsRämmal, Hans; Lavrentjev, JüriMaterials today: proceedings2020 / p. 2331-2337 https://doi.org/10.1016/j.matpr.2020.04.632 https://www.scopus.com/sourceid/21100370037 https://www.scopus.com/record/display.uri?eid=2-s2.0-85091318593&origin=inward&txGid=1c8301a4c71022d36fd1a6b0770a0866 https://www.webofscience.com/wos/woscc/full-record/WOS:000552417600023
• Acoustic study on motorcycle helmets with application of novel porous materialLavrentjev, Jüri; Rämmal, HansSAE Technical Paper Series : The 25th Small Engine Technology Conference (SETC2019) : Small Powertrains–Innovating for Their Future Role, International Conference Center Hiroshima, November 19-21, 2019 : Final program2020 / Paper 2019-32-0531, p. 1-7 : ill https://www.sae.org/publications/technical-papers/content/2019-32-0531/ http://www.setc-jsae.com/2019docs/SETC2019_FinalProgram_all.pdf https://www.scopus.com/sourceid/21100239259 https://www.scopus.com/record/display.uri?eid=2-s2.0-85096585270&origin=inward&txGid=59a9b138e4d65dfbc13e09e34391ded0
• Acoustic study on tubular micro-perforated flow plug sections for vehicle silencer’s applicationVillau, Margus; Rämmal, Hans; Lavrentjev, JüriSAE Technical Paper2022 / p. 1-7 https://doi.org/10.4271/2022-01-0933 https://www.sae.org/publications/technical-papers/content/2022-01-0933/ https://www.scopus.com/sourceid/21100239259 https://www.scopus.com/record/display.uri?eid=2-s2.0-85137160411&origin=inward&txGid=2b1b19bc741d7921c3f716fe2dc05966
• Acoustical methods for investigating turbocharger flow instabilitiesKabral, Raimo; Rämmal, Hans; Abom, MatsSAE Technical Papers2013 https://doi.org/10.4271/2013-01-1879 https://www.scopus.com/sourceid/21100239259 https://www.scopus.com/record/display.uri?eid=2-s2.0-84881197402&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.4271%2F2013-01-1879%29
• Acoustics of turbochargersRämmal, Hans; Abom, MatsSAE Technical Paper Series : SAE 2007 Noise and Vibration Conference and Exhibition : St.Charles, IL (USA), May 15-17 20072007 / paper nr. 2007-01-2205
• Analysis and design of multifunctional laminated glass composite structuresMajak, Jüri; Pohlak, Meelis; Õunapuu, Erko; Auriemma, Fabio; Rämmal, Hans; Saarts, Samo24th International Conference on Composites/Nano-Engineering : ICCE-24 : Haikou, Hainan Island, China, July 17-23, 20162016 / [2] p. : ill
• Application of novel micro-grooved elements to small engine silencerAuriemma, Fabio; Rämmal, Hans; Lavrentjev, JüriSAE Technical Papers2013 / [10] p.: ill https://www.sae.org/publications/technical-papers/content/2013-32-9001/ https://doi.org/10.4271/2013-32-9001 https://www.scopus.com/sourceid/21100239259 https://www.scopus.com/record/display.uri?eid=2-s2.0-84887986231&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.4271%2F2013-32-9001%29&sessionSearchId=842eff8fafa5da0f4673a77a0030efbc
• Characterization of air terminal device noise using acoustic 1-port source modelsRämmal, Hans; Abom, MatsJournal of sound and vibration2007 / 3/5, p. 727-743 : ill https://www.sciencedirect.com/science/article/pii/S0022460X06006857
• A complete acoustic analysis on the passive effect of small engine silencer elementsKabral, Raimo; Rämmal, Hans; Lavrentjev, Jüri; Auriemma, FabioProceedings of International Congress on Sound and Vibration (ICSV18) : Rio de Janeiro, Brazil, 10 to 14 July 20112011
• Concept study of sustainable noise control solution for HVAC systems based on microperforated elementsVillau, Margus; Rämmal, Hans; Lavrentjev, JüriProceedings of the Estonian Academy of Sciences2021 / p. 461-469 : ill https://doi.org/10.3176/proc.2021.4.13 https://www.scopus.com/sourceid/11500153303 https://www.scopus.com/record/display.uri?eid=2-s2.0-85122103261&origin=inward&txGid=ed6903f51728f56e6f2e6ce381a5ef57 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=P%20EST%20ACAD%20SCI&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000750607700013
• Dedicated testrig for acoustic characterization of automotive silencersLavrentjev, Jüri; Rämmal, HansProceedings of the ICSV 16 : The 16th International Congress on Sound and Vibration : Krakow, Poland, 5-9 July, 20092009 / [6] p https://www.researchgate.net/publication/287088587_Dedicated_testrig_for_acoustic_characterization_of_automotive_silencers
• Design and performance of acoustic metamaterial structure for inlet duct noise attenuationLavrentjev, Jüri; Rämmal, HansSAE Technical Papers2017 / 2017-32-0066, [6] p. : ill https://www.sae.org/publications/technical-papers/content/2017-32-0066/ https://www.scopus.com/sourceid/21100239259 https://www.scopus.com/record/display.uri?eid=2-s2.0-85072226433&origin=inward&txGid=1a8b2dd18c6669e939047222f9f2830f
• Design and performance of acoustic metamaterial structure for inlet duct noise attenuation [Online resource]Lavrentjev, Jüri; Rämmal, HansSETC 2017 : 23rd Small Engine Technology Conference “Small Engine Technology - Generating a Promising Future”, November 15-17, 2017 Jakarta, Indonesia : Final program : SAE Technical Paper2017 / 2017-32-006, p. 37 http://www.setc-jsae.com/past_docs/2017/list_of_paper.pdf
• Determination of acoustic properties for open duct termination in hot jet conditions using FEM simulationRämmal, Hans; Lavrentjev, JüriProceedings of the 14th International Congress on Sound and Vibration (ICSV 14) : Cairns (Australia), 9-12 July, 20072007 / ? p https://www.researchgate.net/publication/315747798_DETERMINATION_OF_ACOUSTIC_PROPERTIES_FOR_OPEN_DUCT_TERMINATION_IN_HOT_JET_CONDITIONS_USING_FEM_SIMULATION
• Endurance of micro-perforated elements in unmanned ground vechicle’s small diesel engine silencer applicationRämmal, Hans; Lavrentjev, JüriSAE Technical Paper Series : The 25th Small Engine Technology Conference (SETC2019) : Small Powertrains–Innovating for Their Future Role, International Conference Center Hiroshima, November 19-21, 2019 : Final program2020 / Paper 2019-32-0533, p. 1-8 http://www.setc-jsae.com/2019docs/SETC2019_FinalProgram_all.pdf https://www.scopus.com/sourceid/21100239259 https://www.scopus.com/record/display.uri?eid=2-s2.0-85096589349&origin=inward&txGid=da407b9297f17b38ff0f216deaf95989
• Experimental acoustic characterization of IC-engine simulated hot exhaust systemRämmal, Hans; Lavrentjev, JüriProceedings of INTER-NOISE2004 / ? p
• Experimental concept study of a small engine silencer unit based on microperforated elementsVillau, Margus; Rämmal, Hans; Lavrentjev, JüriProceedings of the Estonian Academy of Sciences2024 / p. 159-167 : ill., fot https://doi.org/10.3176/proc.2024.2.09 https://www.ester.ee/record=b2355998*est
• Experimental determination of acoustic reflection coefficient of duct openings in simulated hot conditions [Electronic resource]Rämmal, Hans; Lavrentjev, JüriProceedings of 33-th International Congress and Exposition on Noise Control Engineering : INTERNOISE2005 : 07-10 August 2005, Rio de Janeiro, Brazil2005 / ? p. [CD-ROM] https://www.ingentaconnect.com/contentone/ince/incecp/2005/00002005/00000007/art00035
• Experimental determination of sound transmission in turbo-compressors : SAE Tech. paper no.2009-01-2045Rämmal, Hans; Abom, MatsSAE Technical Papers2009 / [7] p https://www.diva-portal.org/smash/record.jsf?pid=diva2%3A750030&dswid=-9882
• Experimental facility for the complete determination of sound transmission in turbochargers : SAE 2010-01-1424Rämmal, Hans; Abom, Mats; Tiikoja, Heiki; Boden, HansSAE technical papers2010 / [9] p https://saemobilus.sae.org/papers/experimental-facility-complete-determination-sound-transmission-turbochargers-2010-01-1424
• Experimental investigations of sound reflection from hot and subsonic flow duct terminationTiikoja, Heiki; Lavrentjev, Jüri; Rämmal, Hans; Abom, MatsJournal of sound and vibration2014 / p. 788-800 : ill https://doi.org/10.1016/j.jsv.2013.09.030 https://www.scopus.com/sourceid/13030 https://www.scopus.com/record/display.uri?eid=2-s2.0-84888298709&origin=inward&txGid=8b75815d63684278095d5676f1f648a8 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=J%20SOUND%20VIB&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000328926200012
• Experimental methods for sound propagation studies in automotive duct systemsRämmal, Hans2007 https://www.ester.ee/record=b2298297*est
• Experimental study of noise barrier boards with increased acoustic performance by utilizing Helmholtz resonator effectsLavrentjev, Jüri; Rämmal, HansMaterials today: proceedings2020 / p. 2566-2571 https://doi.org/10.1016/j.matpr.2020.05.402 https://www.scopus.com/sourceid/21100370037 https://www.scopus.com/record/display.uri?eid=2-s2.0-85091267744&origin=inward&txGid=a9361414676e5144f6bd73b58dc09cbf https://www.webofscience.com/wos/woscc/full-record/WOS:000553825500010
• Extended investigations on micro-grooved elements - a novel solution for noise controlAuriemma, Fabio; Rämmal, Hans; Lavrentjev, JüriSAE international journal of materials and manufacturing2014 / p. 184-194 : ill https://doi.org/10.4271/2013-24-0068 https://www.scopus.com/sourceid/19700174666 https://www.scopus.com/record/display.uri?eid=2-s2.0-84908375224&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.4271%2F2013-24-0068%29&sessionSearchId=09c53dd41ef9fa4501d393829f4e1654
• Innovative fibreless HVAC duct silencer based on microperforated elementsVillau, Margus; Rämmal, Hans; Lavrentjev, JüriMaterials today: proceedings2021 / 7 p. : ill https://doi.org/10.1016/j.matpr.2021.06.201 https://www.scopus.com/sourceid/21100370037 https://www.scopus.com/record/display.uri?eid=2-s2.0-85117711214&origin=inward&txGid=4f7057822ed3b1971ab9beb1239d177b
• Investigations of automotive turbocharger acousticsTiikoja, Heiki; Rämmal, Hans; Abom, Mats; Boden, HansSAE international journal of engines2011 / p. 2531-2542
• Micro-grooved elements - a novel solution for noise controlAuriemma, Fabio; Rämmal, Hans; Lavrentjev, JüriSAE international journal of material and manufacturing2013 / p. 599-610 : ill https://doi.org/10.4271/2013-01-1941 https://www.scopus.com/sourceid/19700174666 https://www.scopus.com/record/display.uri?eid=2-s2.0-84887968142&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.4271%2F2013-01-1941%29&sessionSearchId=a450e70506a005c9cabf806d863bdfd1
• Mida suudavad välja uurida autotehnika eksperdid?Riik, Marvel; Luppin, Janek; Rämmal, HansÕhtuleht2016 / lk. 6-7 https://www.ohtuleht.ee/769291/mida-suudavad-valja-uurida-autotehnika-eksperdid
• Modified multi-load method for nonlinear source characterizationRämmal, Hans; Boden, HansJournal of sound and vibration2007 / 4/5, p. 1094-1113 https://www.sciencedirect.com/science/article/pii/S0022460X06006663
• A novel design for cruiser type motorcycle silencer based on micro-perforated elementsKabral, Raimo; Rämmal, Hans; Auriemma, Fabio; Luppin, Janek; Kõiv, Risto; Tiikoja, Heiki; Lavrentjev, JüriSAE technical papers2012 https://www.researchgate.net/publication/236005547_A_Novel_Design_for_Cruiser_Type_Motorcycle_Silencer_Based_on_Micro-Perforated_Elements
• On Acoustic Properties of Duct Termination Exhausting Hot Flow by Utilizing FEMSimulationRämmal, Hans; Lavrentjev, JüriEvolutions in mechanical engineering2021 / art. EME.000565 https://crimsonpublishers.com/eme/fulltext/EME.000565.php
• On experimental techniques to determine acoustic performance of small exhaust silencers : SAE tech. paper no. 2009-32-0015Lavrentjev, Jüri; Rämmal, HansSAE Technical Papers2009 / [6] p https://www.sae.org/publications/technical-papers/content/2009-32-0015/
• On the acoustic reflection at pipe openingRämmal, Hans; Lavrentjev, Jüri; Tiikoja, HeikiProceedings of the 17th International Congress on Sound & Vibration (ICSV17) : Cairo, 18-22 July 20102010 / [8] p
• Reliability study of micro-perforated elements in small engine silencer applicationRämmal, Hans; Lavrentjev, JüriSETC 2017 : 23rd Small Engine Technology Conference “Small Engine Technology - Generating a Promising Future”, November 15-17, 2017 Jakarta, Indonesia : Final program : SAE Technical Paper2017 / 2017-32-0075, p. 37 http://www.setc-jsae.com/setc2017docs/2017finalprogram/SETC2017_Final.pdf https://www.scopus.com/sourceid/21100239259 https://www.scopus.com/record/display.uri?eid=2-s2.0-85072198720&origin=inward&txGid=66ae3d0d70a9537fe058e78a094cb502
• Sound reflection at an open end of a circular duct exhausting hot gasRämmal, Hans; Lavrentjev, JüriNoise control engineering journal2008 / 2, p. 107-114 https://www.ingentaconnect.com/content/ince/ncej/2008/00000056/00000002/art00002;jsessionid=1nroaerjhk1bh.x-ic-live-01
• Sound reflection from subsonic flow duct termination exhausting hot jetRämmal, Hans; Lavrentjev, JüriINTER-NOISE 2008 : 37th International Congress and Exposition on Noise Control Engineering : Shangai, 26-29. October 2008 : proceedings. Vol 32009 / p. 1703-1711 https://kth.diva-portal.org/smash/record.jsf?pid=diva2%3A337599&dswid=3257
• Sound transmission in automotive turbochargersTiikoja, Heiki; Rämmal, Hans; Abom, Mats; Boden, HansSAE Technical Papers2011 / [12] p https://www.sae.org/publications/technical-papers/content/2011-01-1525/
• Studies of flow duct acoustics with applications to turbocharged engines : doctoral thesisRämmal, Hans2009 https://www.diva-portal.org/smash/get/diva2:220198/fulltext01
• Testrig for characterization of turbo-compressor acoustic properties [Electronic resource]Rämmal, Hans; Abom, MatsProceedings of the 29th International AIAA Aeroacoustics Conference : Vancouver, Canada, 20082008 / ? p. [CD-ROM] https://arc.aiaa.org/doi/10.2514/6.2008-2959
• Testrig for complete acoustic characterization of turbochargersTiikoja, Heiki; Rämmal, Hans; Abom, Mats; Boden, HansInternational Aeronautics and Aeroacoustics Conference, Stockholm, Sweden, 07-09 June, 20102010 https://www.researchgate.net/publication/268581496_Test-Rig_for_Complete_Acoustic_Characterization_of_Turbochargers
• The passive acoustic effect of automotive catalytic convertersLavrentjev, Jüri; Rämmal, Hans; Tiikoja, HeikiSAE technical papers2011 / [8] p.: ill https://www.researchgate.net/publication/289649603_The_Passive_Acoustic_Effect_of_Automotive_Catalytic_Converters
• The passive acoustic effect of turbo-compressorsRämmal, Hans; Galindo, J.9th International Conference on Turbochargers and Turbocharging : London, UK, 20102010
• Validation of 1D and 3D analyses for performance prediction of an automotive silencerSiano, Daniela; Auriemma, Fabio; Bozza, Fabio; Rämmal, HansSAE technical papers2011 / [14] p https://www.researchgate.net/publication/258519244_Validation_of_1D_and_3D_Analyses_for_Performance_Prediction_of_an_Automotive_Silencer
• Vibration analysis of multifunctional laminated glass panel [Online resource]Väer, Kaur; Õunapuu, Erko; Eerme, Martin; Auriemma, Fabio; Rämmal, HansInternational Conference "Functional Materials and Nanotechnologies 2017" : Tartu, Estonia in April, 24-27, 2017 : book of abstracts2017 / p. 145 http://www.ester.ee/record=b4668793*est