the paper present systemat procedur detail use experiment analyt modal analysi techniqu structur dynam evalu process vertic machin centr the main result deal assess mode shape differ compon vertic machin centr the simplifi experiment modal analysi differ compon mill machin carri out this model differ machin tool structur made design softwar analyz finit element simul use abaqus softwar extract differ theoret mode shape compon the model evalu correct experiment result modal test machin compon which natur frequenc shape vibrat mode analyz the analysi result determin direct maxim complianc particular machin compon

Anayet U. Patwari

Waleed F. Faris

A. K. M. Nurul Amin

S. K. Loh

Dynamic Modal Analysis of Vertical Machining Centre Components

Yehia A. Bahei-El-Din

Mohammad Tawfik

Advanced Materials for Applications in Acoustics and Vibration

reduc ground born vibrat urban area veri challeng task railway transport mani mitig measur can consid appli among open trench veri effect this paper deal studi effect term reduct vertic horizont displac veloc open trench fem simul have been perform sever open trench configur have been analys vari main geometr featur width depth distanc from rail thick soil layer over rigid bedrock type ground ratio between depth trench thick soil layer for quantifi influenc abov specifi paramet reduc groundborn vibrat analysi use artifici neural network anns has been carri out result show among geometr paramet role depth trench veri signific howev influenc depth must also evalu relat thick soil layer

Gaetano Di Mino

Marinella Giunta

Ciro Maurizio Di Liberto

Assessing the Open Trenches in Screening Railway Ground-Borne Vibrations by Means of Artificial Neural Network

the load act cylindr shell ad period stiffen under transient pressur puls propel pullet gun case has been experiment studi this studi base two mode veloc first subcrit mode second supercrit mode the stiffen ad gun tube experiment gun facil 14 bore diamet the radial strain measur use highfrequ strain gage system phase laser beam detect system timeresolv strain measur wall respons obtain both precursor transvers hoop strain have been resolv the time domain analysi has been done use wavelet transform packag order determin frequenc domain mode vibrat detect critic frequenc mode complet comparison dynam behavior shell tube befor after ad period stiffen has been done which indic signific damp effect reach valu between 615 38 subcrit critic mode the critic frequenc stiffen shell increas supercrit mode chang subcrit mode the amplif dispers factor determin construct reduct correspond speed frequenc about 10 also radialbend vibrat tube muzzl motion detect muzzl veloc ratio 099 result indic signific improv increas number round per second about 36 increas point precis about 47

Khaled M. Saadeldin Eldalil

Amr M. S. Baz

Dynamic Stability of Cylindrical Shells under Moving Loads by Applying Advanced Controlling Techniques Part  I—Using Periodic Stiffeners

the load act activ control cylindr shell under transient pressur puls propel move mass gun case has been experiment studi the concept use piezoelectr stack stiffen combin util damp tube wall radial circumferenti deform vibrat correct meet locat time move mass the experi carri out use same stiffen shell tube experiment 14 gun tube facil which use part 1 using singl doubl stack tri two pressur level lowspe mode which have respons frequenc adapt use piezoelectr stack characterist the maximum activ damp ratio occur highpressur level the radial circumferenti strain measur use highfrequ strain gage system phase laser beam detect system similar which use part 1 time resolv strain measur wall respons were obtain both precursor transvers hoop strain have been resolv complet comparison had been made between effect activ control step structur case which indic signific attenu ratio especi higher oper pressur

Khaled M. Saadeldin  Eldalil

Dynamic Stability of Cylindrical Shells under Moving Loads by Applying Advanced Controlling Techniques&#8212;Part II: Using Piezo-Stack Control

phonon crystal pcs can use acoust frequenc select insul filter twodimension cylindr scatter common axi direct locat period host medium present paper layer multiplescatt lms comput method wave propag through slab formul implement general incidentwav direct polar extension made slab cylindr scatter differ type within each layer applic problem consid design slab small sound transmitt within given frequenc band solid angl region direct incid plane wave the design problem variabl paramet character scatter geometri materi solv differenti evolut global optim algorithm effici navig paramet landscap the efficaci procedur illustr comparison direct mont carlo method

Sven M. Ivansson

Designing 2D Phononic Crystal Slabs with Transmission Gaps for Solid Angle as well as Frequency Variation

product carbon fibr reinforc polym elabor process unfre from fault problem problem dure manufactur pli overlap can caus flaw result materi compromis it integr compar metal materi carbon epoxi composit show number advantag within framework ultrason test effect identifi presenc defect paper finit element method approach propos evalu most effect incid angl ultrason probe regard defect identif accord our goal analysi has been carri out consid singlelin plane emit sourc vari probe angl inclin the propos model look promis special emphas presenc delamin well massiv break specimen multilay carbon fibr epoxi subsequ simul paramet result have been exploit compar respect preliminari experiment inlab campaign measur encourag result

M.  Buonsanti

M. Cacciola

S. Calcagno

G. Megali

F. C. Morabito

D. Pellicanò

M. Versaci

Evaluation of Defects in Multilayer Carbon Fibre Epoxy for Aeronautics Applications

paper problem vibrat induc train propag through soil studi particular attent focus vibrat induc train motion effect vibrat foundat build proxim track the interact between propag wave induc train motion build foundat problem which doe admit straightforward analyt solut thus solut given use model base finit element method first analyz theoret aspect problem consid constant harmon load move along straight railway track defin transfer function soilrailway respons function entir system the studi aim address wave propag elast semispac presenc ground discontinu element barrier given depth consid the effici variat barrier analyz function differ materi use differ numer simul analyz order studi how wave propag tracksoil interact influenc membran seen damp barrier

Michele  Buonsanti

Francis Cirianni

Giovanni Leonardi

Adolfo Santini

Francesco Scopelliti

Mitigation of Railway Traffic Induced Vibrations: The Influence of Barriers in Elastic Half-Space

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Advances in Acoustics and Vibration acts as a forum for the dissemination of innovative and original research and development work in the area of acoustics and vibration.

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Advances in Acoustics and Vibration

Advanced Materials for Applications in Acoustics and Vibration

Advanced Materials for Applications in Acoustics and Vibration

Articles

Dynamic Modal Analysis of Vertical Machining Centre Components

Advanced Materials for Applications in Acoustics and Vibration

Assessing the Open Trenches in Screening Railway Ground-Borne Vibrations by Means of Artificial Neural Network

Dynamic Stability of Cylindrical Shells under Moving Loads by Applying Advanced Controlling Techniques Part I—Using Periodic Stiffeners

Dynamic Stability of Cylindrical Shells under Moving Loads by Applying Advanced Controlling Techniques—Part II: Using Piezo-Stack Control

Designing 2D Phononic Crystal Slabs with Transmission Gaps for Solid Angle as well as Frequency Variation

Evaluation of Defects in Multilayer Carbon Fibre Epoxy for Aeronautics Applications

Mitigation of Railway Traffic Induced Vibrations: The Influence of Barriers in Elastic Half-Space