DE19740844A1 - Vibration block to block vibrations from plate sections and housings, and especially vehicle bodywork - Google Patents

Vibration block to block vibrations from plate sections and housings, and especially vehicle bodywork

Info

Publication number
DE19740844A1
DE19740844A1 DE19740844A DE19740844A DE19740844A1 DE 19740844 A1 DE19740844 A1 DE 19740844A1 DE 19740844 A DE19740844 A DE 19740844A DE 19740844 A DE19740844 A DE 19740844A DE 19740844 A1 DE19740844 A1 DE 19740844A1
Authority
DE
Germany
Prior art keywords
block
sandwich
housings
vibrations
adhesive layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE19740844A
Other languages
German (de)
Inventor
Karlheinz Bildner
Heinrich Eckert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CWW Gerko Akustik GmbH and Co KG
Original Assignee
CWW Gerko Akustik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CWW Gerko Akustik GmbH and Co KG filed Critical CWW Gerko Akustik GmbH and Co KG
Priority to DE19740844A priority Critical patent/DE19740844A1/en
Publication of DE19740844A1 publication Critical patent/DE19740844A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
    • F16F9/306—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium of the constrained layer type, i.e. comprising one or more constrained viscoelastic layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The mechanism to offset vibrations has a sandwich structure with at least one steel plate (1) and a cross linked silicon adhesive layer (2). The side with the silicon adhesive layer is applied to the vibrating plate section.

Description

Die Erfindung betrifft ein Mittel zum Auskoppeln von Schwingungen bei Formteilen und Gehäusen aus Blech, ins­ besondere bei Autokarosserien.The invention relates to a means for decoupling Vibrations in molded parts and housings made of sheet metal, ins especially with car bodies.

Es ist bekannt, Blechformteile durch Aufkleben von bitu­ minösen Dämpfungsfolien zu entdröhnen. Dabei wird das Blechformteil auf einer Seite bis zu 60% von der Dämp­ fungsfolie bedeckt. Zur Verbesserung der Haftung zwischen Blech und Dämpfungsfolie kann diese unterseitig mit einer Schmelzkleberschicht z. B. auf der Basis von EVA versehen sein. Diese bituminösen Dämpfungsfolien haben etwa ein Flächengewicht im Bereich von 3 bis 10 kg/m2 und tragen damit wesentlich zum Gewicht der Karosserieteile bei.It is known to sound deadened sheet metal parts by sticking bituminous damping foils. The sheet metal part is covered on one side by up to 60% of the damping foil. To improve the adhesion between the sheet and the damping film, this can be done on the underside with a hot melt adhesive layer z. B. be provided on the basis of EVA. These bituminous damping foils have a weight per unit area in the range of 3 to 10 kg / m 2 and thus contribute significantly to the weight of the body parts.

Ein weiterer Nachteil ergibt sich daraus, daß die groß­ flächig aufgeklebten Folien sich nur mühsam von der Blechoberfläche entfernen lassen und somit die Wiederver­ wendung beispielsweise einer Karosserie behindern.Another disadvantage arises from the fact that the large foils glued flat only with difficulty Have the sheet surface removed and thus the re hinder a body, for example.

Die bituminösen Dämpfungsfolien dienen dem Zweck, die großflächigen Blechteile, insbesondere von Fahrzeug-Ka­ rosserien, zu entdröhnen, d. h., daß sowohl die Lärmbe­ lastung der Umwelt als auch der Fahrzeug-Insassen gerin­ ger wird. Zur Verminderung der durch den Motor verursach­ ten Geräusche wird ein hoher Verlustfaktor im Bereich von 200 Hz benötigt, der von bituminösen Dämpfungsfolien weitgehend erreicht wird. Zur Reduzierung der Motorleer­ lauf- und Rollgeräusche ist zusätzlich ein hoher Ver­ lustfaktor im Bereich von 30 Hz erforderlich, der aber von bituminösen Dämpfungsfolien nur unzureichend erfüllt wird.The bituminous damping foils serve the purpose that large sheet metal parts, especially from vehicle Ka rosseries, deadening, d. that is, both the noise environmental and vehicle occupants becomes. To reduce the caused by the engine noises becomes a high loss factor in the range of 200 Hz needed, that of bituminous damping foils is largely achieved. To reduce engine empty Running and rolling noise is also a high ver pleasure factor in the range of 30 Hz required, however  insufficiently fulfilled by bituminous damping foils becomes.

Es bestand daher die Aufgabe, ein Mittel zum Entdröhnen insbesondere von Autokarosserien zu entwickeln, das ins­ gesamt ein geringeres Gewicht aufweist, die Wiederverwen­ dung der Blechteile nicht behindert und bei Frequenzen von etwa 30 Hz einen hohen Verlustfaktor aufweist.It was therefore the task of a means to deaden especially to develop car bodies, the ins lighter overall, the reuse the sheet metal parts are not hindered and at frequencies of about 30 Hz has a high loss factor.

Die Aufgabe wird erfindungsgemäß durch ein Sandwich aus mindestens einem Stahlblech 1 und einer Silikonkleber­ schicht 2 gelöst. Es wird vorzugsweise mit der Silikon­ kleberschichtseite mechanisch auf das zu entdröhnende Blech befestigt.The object is achieved by a sandwich of at least one steel sheet 1 and a silicone adhesive layer 2 . It is preferably mechanically attached to the sheet of metal to be deadened with the silicone adhesive layer side.

Der maximale Verlustfaktor dieses einfachen Sachwichs ist bei 30 Hz bereits 55% höher als der einer mit Schmelz­ kleber versehenen bituminösen Dämpfungsfolie. Das Maximum ist außerdem zu höheren Temperaturen hin verschoben, wo­ durch die Anwendung im motornahen Bereich ermöglicht wird. Durch das Übereinanderschichten mehrerer Sachwichs wird der Verlustfaktor wesentlich erhöht.The maximum loss factor of this simple thing is at 30 Hz already 55% higher than the one with enamel bituminous damping film provided with adhesive. The maximum is also shifted to higher temperatures where made possible by the application in the area close to the engine becomes. By stacking several sandwiches the loss factor is increased significantly.

Das Stahlblech hat eine Dicke von 0,1 bis 10 mm, vorzugs­ weise 0,4 bis 0,6 mm, und die Kleberschicht eine Dicke von 30 bis 200 µm, vorzugsweise von 80 bis 150 µm.The steel sheet has a thickness of 0.1 to 10 mm, preferably example 0.4 to 0.6 mm, and the adhesive layer a thickness from 30 to 200 µm, preferably from 80 to 150 µm.

Überraschenderweise wurde gefunden, daß durch den güns­ tigen Temperaturbereich und den hohen Verlustfaktor im niedrigen Frequenzbereich vor allem der mehrlagige Sand­ wichaufbau geeignet ist, im Motorbereich Schwingungen auszukoppeln. Hierzu ist keine vollflächige Beschichtung der zu entdröhnenden Karosserieteile erforderlich.Surprisingly, it was found that the güns temperature range and the high loss factor in low frequency range especially the multi-layer sand Which structure is suitable, vibrations in the engine area decouple. There is no full-surface coating for this of the body parts to be deadened.

Ein bis zu 10 cm × 20 cm großes Sandwich im Bereich des ersten Schwingungsbauches auf das Blech geschraubt oder genietet, reicht hierfür in den meisten Fällen aus. Da­ durch wird einerseits Gewicht gespart, andererseits ist der nichtmetallische Anteil so gering, daß er einer Wie­ derverwendung der Metalle nicht im Wege steht.A sandwich up to 10 cm × 20 cm in size in the area of the first antinode screwed onto the sheet or  riveted is sufficient for this in most cases. There by saving weight on the one hand, on the other hand is the non-metallic part so low that it is a how the use of metals is not in the way.

Die lösbare mechanische Befestigung bietet noch eine zu­ sätzliche Möglichkeit, bei höheren Anforderungen der Schrottverwertung das Sandwich zu entfernen und getrennt aufzuarbeiten.The detachable mechanical attachment offers one more additional possibility with higher requirements of the Scrap recycling to remove and separate the sandwich work up.

Die Erfindung wird anhand der nachfolgenden Beispiele nä­ her erläutert.The invention is based on the following examples ago explained.

Fig. 1 zeigt einen zweilagigen Sandwichaufbau mit zwei 0,5 mm dicken Stahlblechen 1 und zwei 100 µm dicken Sili­ konkleberschichten 2, der mit Schrauben 3 auf die zu ent­ dröhnende Stahlplatte 4 geschraubt ist. Die freiliegende Seite des Stahlbleches 1 ist mit einem Korrosionsschutz­ lack versehen. Fig. 1 shows a two-layer sandwich structure with two 0.5 mm thick steel sheets 1 and two 100 µm thick silicon adhesive layers 2 , which is screwed with screws 3 to the droning steel plate 4 . The exposed side of the steel sheet 1 is provided with a corrosion protection paint.

Beispiel 1example 1

Ein 0,5 mm dickes Stahlblech wird mit einem Silikonkleber (45 Gew.-% Toluol und 55 Gew.-% Silikon/PSA 6574 STLGRIP® der General Electric/Flexibilitätsbereich: -184 bis 260°C, dem 1,5 Gew.-% Vernetzer Typ PMBP-50-PSI (Fa. Per­ oxid-Chemie GmbH) zugesetzt werden), beschichtet. Nach dem Trocknen hat die Beschichtung eine Dicke von 100 µm. An diesem einlagigen Sandwich wurde der Verlustfaktor nach DIN 53 440 im Bereich von 0 bis 80°C für 30 Hz und die Resonanzkurve 2. Ordnung bestimmt. Die Ergebnisse sind in Fig. 2 dargestellt.A 0.5 mm thick steel sheet is covered with a silicone adhesive (45% by weight toluene and 55% by weight silicone / PSA 6574 STLGRIP® the General Electric / flexibility range: -184 to 260 ° C, the 1.5% by weight % Crosslinker type PMBP-50-PSI (from Peroxid-Chemie GmbH) are added), coated. After drying, the coating has a thickness of 100 µm. The loss factor according to DIN 53 440 in the range from 0 to 80 ° C for 30 Hz and the second order resonance curve were determined on this single-layer sandwich. The results are shown in Fig. 2.

Als Vergleich ist der Maximalbereich der Verlustfaktoren bei 30 Hz für eine übliche 2,4 mm dicke bituminöse Ent­ dröhnungsfolie (Flächengewicht 3 kg/m2) mit 45 µm dickem Schmelzkleberauftrag eingezeichnet. Der Vergleich zeigt, daß das einlagige Sandwich gemäß der Erfindung bis zu 60 % höhere Verlustfaktoren zu höheren Temperaturen hin ver­ schoben aufweist.As a comparison, the maximum range of the loss factors at 30 Hz for a conventional 2.4 mm thick bituminous dehumidification film (basis weight 3 kg / m 2 ) with a 45 μm thick hot melt adhesive application is shown. The comparison shows that the single-layer sandwich according to the invention has up to 60% higher loss factors pushed to higher temperatures.

Beispiel 2Example 2

Aus dem einlagigen Sandwich nach Beispiel 1 wurde ein zwei- und dreilagiges Sandwich aufgebaut. Die bei 30 Hz gemessenen Verlustfaktoren sind in Fig. 3 wiedergegeben.A two- and three-layer sandwich was built up from the single-layer sandwich according to Example 1. The loss factors measured at 30 Hz are shown in FIG. 3.

Der Vergleich mit dem einlagigen Sandwich zeigt deutlich den überraschenden überproportionalen Anstieg der maxima­ len Verlustfaktoren, insbesondere bei dem zweilagigen Sandwich. Das dreilagige Sandwich bringt noch eine wei­ tere Steigerung des Verlustfaktors, die jedoch geringer ist. Daraus läßt sich ableiten, daß ein Sandwich mit mehr als drei Lagen nur noch eine geringfügige Eigen­ schaftsverbesserung bringt, so daß vorzugsweise ein zwei- und dreilagiges Sandwich zum Auskoppeln von Schwin­ gungen zur Anwendung gelangt.The comparison with the single-layer sandwich shows clearly the surprising disproportionate increase in maxima len loss factors, especially in the two-layer Sandwich. The three-layer sandwich brings another white higher increase in the loss factor, but less is. From this it can be deduced that a sandwich with more than three layers only a minor own shaft improvement brings, so that preferably a two- and three-layer sandwich for decoupling Schwin conditions apply.

Claims (4)

1. Mittel zum Auskoppeln von Schwingungen, dadurch ge­ kennzeichnet, daß es aus einem Sandwich aus mindestens einem Stahlblech (1) und einer vernetzten Silikonkleber­ schicht (2) besteht.1. Means for decoupling vibrations, characterized in that it consists of a sandwich of at least one steel sheet ( 1 ) and a crosslinked silicone adhesive layer ( 2 ). 2. Mittel nach Anspruch 1, dadurch gekennzeichnet, daß das Stahlblech (1) eine Dicke von 0,1 bis 10 mm hat und die Silikonkleberschicht (2) eine Dicke von 30 bis 200 µm.2. Composition according to claim 1, characterized in that the steel sheet ( 1 ) has a thickness of 0.1 to 10 mm and the silicone adhesive layer ( 2 ) has a thickness of 30 to 200 µm. 3. Mittel nach einem der Ansprüche 1 oder 2, dadurch ge­ kennzeichnet, daß das Sandwich zwei- oder dreilagig auf­ gebaut ist.3. Agent according to one of claims 1 or 2, characterized ge indicates that the sandwich has two or three layers is built. 4. Mittel nach einem der Ansprüche 1 bis 3, dadurch ge­ kennzeichnet, daß das Sandwich eine Grundfläche von bis zu 10 cm × 20 cm hat und mit der Silikonkleberschicht­ seite mechanisch auf das zu entdröhnende Blechteil mon­ tierbar ist.4. Agent according to one of claims 1 to 3, characterized ge indicates that the sandwich has a footprint of up to to 10 cm × 20 cm and with the silicone adhesive layer mechanically on the sheet metal part to be deadened mon is animal.
DE19740844A 1997-09-17 1997-09-17 Vibration block to block vibrations from plate sections and housings, and especially vehicle bodywork Ceased DE19740844A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19740844A DE19740844A1 (en) 1997-09-17 1997-09-17 Vibration block to block vibrations from plate sections and housings, and especially vehicle bodywork

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19740844A DE19740844A1 (en) 1997-09-17 1997-09-17 Vibration block to block vibrations from plate sections and housings, and especially vehicle bodywork

Publications (1)

Publication Number Publication Date
DE19740844A1 true DE19740844A1 (en) 1999-03-18

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Country Link
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002281A1 (en) * 2000-01-20 2001-07-26 Volkswagen Ag Component with sandwich structure, in particular, for motor vehicle bodywork comprises a distancing layer which is provided with cutouts serving for spot attachment of the cover layer to the base sheet
DE10212033B3 (en) * 2002-03-19 2004-01-22 Daimlerchrysler Ag Torque-transmitting coupling connection between a crankshaft of an internal combustion engine and a transmission unit of a vehicle
WO2009027480A1 (en) * 2007-08-31 2009-03-05 Thyssenkrupp Steel Ag Vibration-damping composite component
US8540842B2 (en) 2008-08-18 2013-09-24 Productive Research Llc Formable light weight composites
US8796580B2 (en) 2009-12-28 2014-08-05 Productive Research Processes for welding composite materials and articles therefrom
US9005768B2 (en) 2011-02-21 2015-04-14 Productive Research Composite materials including regions differing in properties and methods
US9115264B2 (en) 2010-02-15 2015-08-25 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US9233526B2 (en) 2012-08-03 2016-01-12 Productive Research Llc Composites having improved interlayer adhesion and methods thereof
US11338552B2 (en) 2019-02-15 2022-05-24 Productive Research Llc Composite materials, vehicle applications and methods thereof

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DE1675566A1 (en) * 1966-04-23 1970-05-06 Hoechst Ag Vibration-damping composite systems with intermediate layers of vinyl acetate / ethylene / isononane, isodecane-carboxylic acid vinyl ester mixture copolymers
DE3445759A1 (en) * 1983-12-16 1985-06-27 Bridgestone Corp., Tokio/Tokyo VIBRATION SOUND ABSORBENT PLATE
US4744539A (en) * 1987-01-21 1988-05-17 Mack Trucks, Inc. Vehicle mounting arrangement
DE9104672U1 (en) * 1991-04-17 1991-06-27 Gerko-Werke Gassel Reckmann Gmbh + Co., 4800 Bielefeld, De
EP0642920A2 (en) * 1988-04-01 1995-03-15 Nichias Corporation Vibration damping materials and soundproofing structures using such damping materials
DE9318135U1 (en) * 1993-11-26 1995-03-30 Duewag Ag Element for damping structural vibrations of a vehicle cell, in particular of rail vehicles
DE29614430U1 (en) * 1996-08-09 1996-12-12 Janz Norbert Dipl Ing Sandwich component

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Publication number Priority date Publication date Assignee Title
DE1675566A1 (en) * 1966-04-23 1970-05-06 Hoechst Ag Vibration-damping composite systems with intermediate layers of vinyl acetate / ethylene / isononane, isodecane-carboxylic acid vinyl ester mixture copolymers
DE3445759A1 (en) * 1983-12-16 1985-06-27 Bridgestone Corp., Tokio/Tokyo VIBRATION SOUND ABSORBENT PLATE
US4744539A (en) * 1987-01-21 1988-05-17 Mack Trucks, Inc. Vehicle mounting arrangement
EP0642920A2 (en) * 1988-04-01 1995-03-15 Nichias Corporation Vibration damping materials and soundproofing structures using such damping materials
DE9104672U1 (en) * 1991-04-17 1991-06-27 Gerko-Werke Gassel Reckmann Gmbh + Co., 4800 Bielefeld, De
DE9318135U1 (en) * 1993-11-26 1995-03-30 Duewag Ag Element for damping structural vibrations of a vehicle cell, in particular of rail vehicles
DE29614430U1 (en) * 1996-08-09 1996-12-12 Janz Norbert Dipl Ing Sandwich component

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LAWENDEL,Egon: Berechnung von Schichtkonstruktionen aus hochelastischen und aus steifen Materialschichten. In: Plaste und Kautschuk, 27.Jg., H.12/1980, S.701-704 *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002281A1 (en) * 2000-01-20 2001-07-26 Volkswagen Ag Component with sandwich structure, in particular, for motor vehicle bodywork comprises a distancing layer which is provided with cutouts serving for spot attachment of the cover layer to the base sheet
DE10002281B4 (en) * 2000-01-20 2008-01-31 Volkswagen Ag Component in sandwich construction, in particular body part for motor vehicles, and method for producing such a component
DE10212033B3 (en) * 2002-03-19 2004-01-22 Daimlerchrysler Ag Torque-transmitting coupling connection between a crankshaft of an internal combustion engine and a transmission unit of a vehicle
WO2009027480A1 (en) * 2007-08-31 2009-03-05 Thyssenkrupp Steel Ag Vibration-damping composite component
DE102007041484A1 (en) * 2007-08-31 2009-03-05 Thyssenkrupp Steel Ag Vibration-damping composite component
US8540842B2 (en) 2008-08-18 2013-09-24 Productive Research Llc Formable light weight composites
US9889634B2 (en) 2008-08-18 2018-02-13 Productive Research Llc Formable light weight composites
US9434134B2 (en) 2008-08-18 2016-09-06 Productive Research Llc Formable light weight composites
US9239068B2 (en) 2009-12-28 2016-01-19 Productive Research Llc Processes for welding composite materials and articles therefrom
US8796580B2 (en) 2009-12-28 2014-08-05 Productive Research Processes for welding composite materials and articles therefrom
US10710338B2 (en) 2010-02-15 2020-07-14 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US9115264B2 (en) 2010-02-15 2015-08-25 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US9415568B2 (en) 2010-02-15 2016-08-16 Productive Research Llc Formable light weight composite material systems and methods
US11331880B2 (en) 2010-02-15 2022-05-17 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US9849651B2 (en) 2010-02-15 2017-12-26 Productive Research Llc Formable light weight composite material systems and methods
US11084253B2 (en) 2010-02-15 2021-08-10 Productive Research Llc Light weight composite material systems, polymeric materials, and methods
US9981451B2 (en) 2010-02-15 2018-05-29 Productive Research Llc Delamination resistant, weldable and formable light weight composites
US10457019B2 (en) 2010-02-15 2019-10-29 Productive Research Llc Light weight composite material systems, polymeric materials, and methods
US9005768B2 (en) 2011-02-21 2015-04-14 Productive Research Composite materials including regions differing in properties and methods
US9962909B2 (en) 2011-02-21 2018-05-08 Productive Research Llc Composite materials including regions differing properties, and methods
US9233526B2 (en) 2012-08-03 2016-01-12 Productive Research Llc Composites having improved interlayer adhesion and methods thereof
US11338552B2 (en) 2019-02-15 2022-05-24 Productive Research Llc Composite materials, vehicle applications and methods thereof

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