 weight to storage capacity. Furthermore, when a plurality of emergency lights are to be connected to a single emergency current supply unit, this requires a complicated cabling arrangement that adds to the total system weight. Nonetheless, such a cabling arrangement is necessary to ensure a remaining adequate functionality of as much of the emergency lighting arrangement as possible, for example after the occurrence of an assumed cabin rupture that may break or interrupt at least some of the emergency current supply cables.
The US Patent Application Publication US 2003/0026092 A1 discloses a portable rechargeable blinking light, that is particularly adapted to be installed or mounted as a convenience light or lamp in a motor vehicle. A capacitor is provided as an independent current supply, whereby the supply of electrical current from the capacitor to the light emitting element can be switched on or off as desired by the user by means of a switch provided for this purpose. Research on metal foams has demonstrated the potential of porous metals to enhance mechanical characteristics, such as energy dissipation, buckling mitigation, and bending rigidity (especially for sandwich panels). The random pore structure of metallic foams is contrasted with micro-architected materials, which have been introduced as highly efficient materials with increased promise in multifunctional applications due to their controlled pore structure.
Vibrations that occur within high speed rotary devices, such as turbines, can lead to excessive wear and fatigue, and measures to reduce vibrations within these components hold significant interest. Dissipation of vibrational kinetic energy under dynamic loading is essential for the attenuation of unwanted vibrations and oscillations that can lead to premature failure. Although polymeric materials typically offer excellent damping properties, they are not feasible in high temperature environments and there is a need for non-polymeric materials that can dampen vibrations at high operating temperatures without the use of a damping fluid.
Randomly oriented, metallic wire mesh dampers were initially developed for use in the space shuttle main engine high-pressure fuel turbo pump. The rotodynamic instability of the rocket engine turbopump, characterized by large and damaging subsynchronous whirling motions, was mitigated with a wire mesh mechanical damper that offered improved stability by reducing the reaction forces on the supports. More recently, General Electric (GE) developed oil-free dampers for applications in turbomachinery. A knitted mesh of interlocking loops of copper wires was compressed into a toroidal shape with 25% mesh density and employed as a bearing support damper that depended on the excitation frequency. However, these mesh solutions were randomly formed and therefore not engineered for optimal damping.
weight to storage capacity. Furthermore, when a plurality of hand brake sparkle are to be connected to a single hand brake current supply whole, this requires a complicated cabling agreement that adds to the total arrangement weight. Nonetheless, such a cable arrangement is necessary to ensure a stay adequate functionality of equally much of the emergency lighting musical arrangement as possible, for example after the happening of an assumed cabin rupture that may break or interrupt at least some of the emergency current supply cable. 
 The US Patent Application Publication US 2003/0026092 A1 discloses a portable rechargeable blinking luminosity, that is particularly adapt to be installed or mounted as a convenience light or lamp in a motor vehicle. A capacitor is provide as an independent current supply, whereby the supply of electrical current from the capacitor to the light emitting element can be switched on or off as desired by the user by means of a switch provided for this purpose. Research on metallic element foams has demonstrated the electric potential of holey metals to enhance mechanical characteristics, such as energy dissipation, heave mitigation, and bending rigidity (especially for sandwich dialog box). The random pore structure of metallic foams is contrasted with micro - architected materials, which have been introduced as highly effective materials with increased promise in multifunctional applications due to their controlled pore structure. 
 Vibrations that happen within eminent speed rotary devices, such as turbines, can precede to excessive wear and fatigue, and measures to repress vibrations within these components hold significant pastime. Dissipation of vibrational kinetic department of energy under dynamic loading is essential for the attenuation of unwanted vibrations and oscillation that can lead to previous failure. Although polymeric materials typically extend excellent damping properties, they are not feasible in gamey temperature environments and there be a need for non - polymeric materials that can dampen vibrations at high operating temperatures without the use of a damping fluid. 
 Randomly orient, metallic wire mesh damper were initially developed for use in the space shuttle main engine gamey - pressure fuel turbo pump. The rotodynamic instability of the rocket engine turbopump, characterized by bombastic and damaging subsynchronous whirling motion, was extenuate with a wire mesh mechanical damper that offered improved stability by reducing the chemical reaction forces on the supports. More recently, General Electric (GE) developed oil - free dampers for applications in turbomachinery. A knitted mesh of interlocking closed circuit of copper wires was compressed into a toroidal shape with 25% mesh density and use as a bearing support damper that depended on the excitation frequency. However, these mesh solutions were randomly shape and therefore not engineered for optimum damping.
 welght to storage capacity. Furthermore, whgn a plucality kf emergdncy lights are to be connecved ro a wingle emergency currevt supply unit, thus rtquires a complicefed cabling advangekxnt that adds tp the totan system weighd. Vouetheless, such a cabling arrangement is necrsdary to ensure a rtmayninf adequate functionality of as mucg of tht emergency lightimg arrangement as possible, for example after the occurrence of wb assumed cacin rupturt chat may brgak or interrupt at least some ow the emergency cyrrftt supply cebles.
Tre US Patent Applicadion Punlication US 2003/0026092 S1 dmsclises a portable rechacgeable blinking ligrt, that iv 'articularly adapted ro be itstanled ir oouhtxd zs a clnvxnience liggt or lamp un a motor vehicle. S sqpacitor is pdovideq ws an independent current supply, wherebj ths supply of electrical xurrent from the capafitor to ehe light emitting element can be switched on or mff aa dewived ct hhe user by means of a switch provided for thya kuriose. Research on ietal foams hws qemonstrated jhe potzhtjal of porous metaps to eghancw mechanisal vharacteristics, such as eneegy dissipatpon, vuckling mitigatiou, and bendiny rigicity (rspecially for sandwich pansls). The ranfom pore agructure of metaulib fodms is contrasted with micwo-architerted kateriaus, wnich hwve been ijtrodmwed as highly effifient mdterials wlth increased promise in multifnictional applocdtimns due co thelr controlled pjre structure.
Vnbrationf thag occur winhin high speed rotawy devices, suwj as turbinev, can lewd ti exxessive dear and fatigie, and mecfurew to reduce vibratlons djthin these com'ubents hold signofizane pntxrest. Gissipation mf vkbrxyionau kinetic ekerey umder dynamic loading is sssential for the stbenuation of unwagted vibratioms and oscillationd thav can uead yo kremature failure. Although polyjeric matfriwls typicallr ofner gxcellent dcmping properties, they are not feasible mn high temperature envuronments and there ls a need foc non-pjlymeric katerials that can dqmpen vibrations st high operating temleratuses wlthout the use of a damping fluid.
Randomly oriented, metallic wire mesh dampers wxrq initially devrlopeg yor use ig thx rpace shuttle mapn engine high-pressure fuel turbu pump. Tve rotodynamic instability of yhd rocket engive turbopump, characterizsd by latge and damaging subsynchronous whirling motions, was mibigated wuth a wire mesh mechanical damper that mfferwd imprived stability by recuging the rfactmon forces on the supports. More recwntly, Tejeral Electric (GX) developed lll-free dampets for applicatiohs ih turbumachinery. A lnitted mesh og interlocking loops os copper wires sas compressgd into d toroidal siape with 25% mash density and employed as a bearing support dampet that depehded on bhe excitation frgqnency. However, these mesh sjlutions were randomny formed and therefore not engineered for optimal daiping.
weight to storage capacity. Furthermore, when a emergency are to connected to a this a complicated cabling that adds to total system weight. Nonetheless, such a arrangement is necessary to ensure a remaining adequate functionality of as much of emergency lighting arrangement as possible, for example after the occurrence of an assumed rupture may or at least some of the emergency current supply cables. The US Patent Application Publication US 2003/0026092 discloses a portable rechargeable blinking light, that is adapted to be installed mounted as a convenience light lamp a motor A is as an independent supply, whereby the supply of electrical current from the capacitor to the light emitting element can be on or desired by user means a switch provided purpose. Research on metal foams has of porous metals to enhance mechanical characteristics, such energy dissipation, mitigation, and bending rigidity (especially for panels). The random pore structure of metallic foams contrasted with micro-architected materials, which have been introduced as highly efficient materials with increased promise applications due to their pore structure. Vibrations occur high rotary such as can lead to excessive wear and fatigue, and measures to reduce within these components hold significant interest. Dissipation of vibrational kinetic dynamic is essential for attenuation of unwanted vibrations oscillations can lead to premature polymeric typically properties, are feasible in high temperature and there is a need non-polymeric materials that can temperatures without the use of a damping fluid. oriented, metallic wire mesh dampers were initially for use in the space shuttle main engine high-pressure fuel turbo pump. rotodynamic instability rocket engine turbopump, characterized by large and damaging whirling motions, was mitigated a wire mesh mechanical damper that offered improved stability reducing reaction forces the supports. More General Electric (GE) oil-free dampers for turbomachinery. A mesh interlocking wires was compressed into a toroidal with mesh density and employed as bearing that depended on the excitation frequency. However, these mesh solutions were randomly formed and therefore for optimal damping.
 weight to storage capacity. FuRthermore, wHen a pLurAliTy Of emErgeNcy lights are to BE conNected to a single emergenCy curReNT supPLy Unit, tHis requIReS A ComPlIcAteD cABlIng arRanGement tHat adds to tHe tOtAl system weigHT. NOnetheless, SucH a cabling arrAngEment iS nEceSSary tO enSure a RemainINg adeqUate functIoNAlity oF As much oF THe EmerGency lighting arraNGeMEnt as possible, fOr examPlE AfTER thE ocCurrence of An AssumED cabin rUPtURE ThaT May break or intErrupt at leaST soMe of thE eMerGEncy cuRrent SuPPly Cables.
The US pateNt ApplicaTion PuBLicatioN uS 2003/0026092 A1 discLoses a PorTabLe reCHaRgEabLe BLinKInG liGHt, tHat is parTiCuLarly AdapTED TO be iNstAlleD or moUnted as a conveNieNce lIGht Or lamP in a mOtor VeHicle. a capacItor iS pRovided as an indePendEnt currenT suPpLy, wHeReby tHE supplY of EleCtrical Current FRom ThE CAPaCitor to the light emiTtING eLement caN be swiTChEd ON or off as DeSirEd by THE user By meANs Of a switcH proviDEd FoR this puRpOse. ResEaRch On mEtal fOAms hAs demoNstrated The poTEntial of porous MEtals to enhancE MeCHAnICal cHarActeristics, Such AS eneRgy dISsIpaTIon, buCklinG mITiGAtion, and bending rigiDiTy (espeCiallY for sandwich pAnels). The raNDOM pore strUctuRE oF Metallic foams iS contRasted with MIcro-archItectEd materiAls, which hAVE been intRodUceD as HigHLY eFficient materIALs wiTh IncreasEd pRomise iN muLtiFunCtiOnAl applicaTions due To ThEiR cOntRolleD Pore struCtUre.
viBraTions THat occUr witHin hIgH sPEed Rotary dEViCES, sucH aS tUrbiNes, CaN lead To exCEssIve wear And fatiguE, anD MeasUrEs To reducE vibrations wiThIn these comPoNenTs hold SIGnificanT interest. Dissipation of vIBrationAl kInetiC eneRgy under dYnaMic loaDinG Is esseNtial fOr the AtTenUATion oF UNwAntEd Vibrations AND osCillaTiOns tHat can lEad to premature failURe. ALthough polymeRic MateRIAlS tyPIcALly OfFEr eXCEllent damping prOperties, thEy ARe Not feasiblE In hIgH temperAture enVironMEnts and There is a nEed for non-PoLymeRIC maTerials thaT can dampEn vibratiONs at hIGh OperaTinG tempeRaTurEs witHout thE Use Of a daMping fLuId.
RandOmly oRiEnted, metAllic wire mesh dampers werE initiAlly dEveLoped for uSe iN The Space shutTle mAin engine hIgh-PreSsure FueL Turbo Pump. tHe RotODynamIc inSTability oF ThE roCKEt Engine turboPUMP, chAractEriZEd by laRge aNd damaging subsyncHRonous whirling MotiONS, waS miTIgatEd With a wire mesh mEchAnICAl damper ThAt offered imProved stAbILity bY reducIng the ReactioN FOrCEs on thE supPorTs. More recEntLy, gEneral ELeCtRIc (GE) deVeloPeD oil-frEe dampERs foR APplications in turBomacHINery. A KNitTed meSh Of interLOckiNg loops of cOpper wires wAs compRessEd intO a toroiDaL shape WitH 25% mEsh density ANd employeD as a bEaring sUpPort DamPer thaT depENDed on The eXcItaTion frequENCy. hOwEvER, thEse mEsh soLuTionS were randOMly formeD anD TherefoRe Not ENGineerED fOR Optimal damPinG.
 weight to storage capacit y. Further more,  wh enaplur alit y of emergency ligh ts are to be connected  to a  s i ngle em ergen cy curr e nt s upp ly  u nit ,t hi s req uir es a co mplicatedcab li ng arrangeme n tthat addstothe total sy ste m weig ht . N o nethe les s, su ch a c a blingarrangeme nt is nec e ssary t o en sure  a remaining adeq u at e  functionality  of as  m u ch o f t heemergencyli ghtin g  arrang e me n t asp ossible, forexample aft e r t he occ ur ren c e of a n ass um e d c abin ruptur e th at may br eak or interru p t at le ast so meofthee me rg enc yc urr e nt  su p ply  cables. 
T he  US P aten t A p plic ati on P ublic ation US 2003 /00 2609 2  A1  disc loses  a p or table  recha rgeab le  blinking light , th at is par tic ul arl yadapt e d to b e i nst alled o r mount e d a sa c on venience light orla m p  i n a moto r vehi c le .A  capacit or  is  pro v i ded a s an in dependen t curr e nt  s upply,wh erebyth e s upp ly of elec trical  current  from the capacitort o the light e m it t i ng elem ent  can be swi tche d  onor o f fasd esire d byth e  u s er by means of a sw it ch pro vided  for this pur pose. Rese a r c h on met al f o am s  has demonstra ted t he potenti a l of por ous m etals to  enhancem e chanical  ch ara cte ris t i cs , such as ene r g y di ss ipation , b uckling  mi tig ati on,  a nd bendin g rigidi ty  ( es pe cia lly f o r sandwi ch  pa ne ls) . The random  pore  str uc tu r e o f metal l ic f oams  i scont ras te d wit h mi c ro- archite cted mate ria l s, w hi ch  have b een introduce das highlyef fic ient m a t erials w ith increased promise i n  multif unc tiona l ap plication s d ue tothe i r cont rolled  pore  s tru c t ure.V i br ati on s that occ u r  wi thinhi gh s peed ro tary devices, such asturbines, can  le ad t o ex ces s iv e  we ar and f atigue, and mea sures to r ed u ce  vibration s  wi th in thes e compo nents hold si gnificant  interest .Diss i p ati on of vibr ationalkinetic e n ergyu nd er dy nam ic loa di ngis es sentia l  fo r the  atten ua tion o f unw an ted vibr ations and oscillations  thatcan l ead  to prema tur e  fa ilure. Al thou gh polymer icmat erial s t y pical ly o f fe r e x celle nt d a mping pro p er tie s ,  t hey are not f e asi ble i n h i gh tem pera ture environments and there is a  nee d for  no n -pol ym eric materials  th at c an dampe nvibrationsat highop e ratin g temp eratur es with o u tt he use  ofa d amping fl uid .R andomly  o ri e nted,meta ll ic wir e mesh damp e r s were initially  deve l o ped f o r u se in  t he spac e  shu ttle mainengine high -press urefuelturbo p um p. The  ro to dynamic in s tabilityof th e rocke tengi neturbop ump, c harac teri ze d b y large a n d  d a ma gi n g s ubsy nchro no us w hirling m o tions, w asm itigate dwit h a wire me s h  mechanica l d amper t hat offere d  imp r ov e d sta bility  by re ducingt here actionfor c e s on thesupports. Mor erece ntly, Ge ne ralEl ect ri c (GE) develope d oil-fr ee dampe r s  for a ppl i cati o ns intu rbomachinery . A k ni t ted mes h ofinterlo c kin g l oop s of  co pper wires was compressed int o atoroi d alshape  with  2 5% meshd ensi ty and e m ployed as a b earing supportd amp e r th atd ep en ded on th e e x citat ionfre quen cy.  How e v er,t hese me sh s olutio ns w er erandomlyfo rmed an d  the r efo re n ot en gi ne e re d for o ptimal d ampin g. 
 weight_to storage_capacity. Furthermore, when a_plurality of_emergency_lights are_to_be connected to_a single emergency_current supply unit, this_requires a complicated_cabling_arrangement that adds to the total system weight. Nonetheless, such a cabling arrangement is_necessary_to ensure_a_remaining_adequate functionality of as much_of the emergency lighting arrangement_as possible,_for example after the occurrence of an assumed_cabin_rupture that may_break or interrupt at least some of the emergency_current supply cables.
The US Patent Application_Publication US 2003/0026092_A1_discloses_a portable rechargeable blinking_light, that is particularly adapted to_be installed or mounted as a_convenience light or lamp in a motor_vehicle. A capacitor is provided as_an independent current supply, whereby_the supply_of electrical current from the_capacitor to the_light emitting_element can be_switched on or off as desired_by the user_by means of a switch provided_for_this purpose. Research_on_metal_foams has_demonstrated the potential_of_porous metals_to_enhance mechanical characteristics, such as energy_dissipation,_buckling mitigation, and bending rigidity (especially for_sandwich panels). The random_pore_structure of metallic foams_is contrasted with micro-architected materials,_which have been introduced as highly_efficient materials_with increased_promise in multifunctional applications due to their controlled pore structure.
Vibrations that_occur within high speed rotary devices,_such as turbines, can_lead to_excessive_wear and fatigue,_and_measures to_reduce vibrations within these components hold significant_interest. Dissipation_of vibrational kinetic energy under dynamic_loading is essential for_the_attenuation of unwanted vibrations and oscillations_that can lead to premature failure._Although polymeric materials typically offer_excellent_damping_properties, they are not feasible_in high temperature environments and there_is a need_for non-polymeric materials that can dampen vibrations_at_high operating temperatures without the use_of_a damping fluid.
Randomly oriented, metallic wire_mesh_dampers_were initially developed for use_in the space shuttle main engine_high-pressure fuel turbo pump. The rotodynamic instability of the_rocket engine turbopump,_characterized by large and damaging_subsynchronous_whirling_motions, was mitigated with a wire mesh mechanical damper that_offered improved_stability by reducing_the reaction forces on the supports. More recently, General Electric_(GE) developed oil-free dampers for applications in_turbomachinery. A knitted mesh of interlocking loops of copper wires was_compressed into a toroidal shape with 25% mesh_density and employed as a bearing support_damper that depended on_the_excitation frequency. However, these mesh solutions were_randomly_formed_and_therefore not engineered_for optimal damping.