• Keine Ergebnisse gefunden

Die Fachöffentlichkeit wurde über vorliegende Ergebnisse durch Vorträge auf Ver-anstaltungen holzwirtschaftlicher Verbände (Sägewerksverbände, Bund Deutscher Zimmermeister, Studiengemeinschaft Hclzleimbau, Verband der Nagelplattenver-wender) sowie auf nationalen und internationalen Fachtagungen (Fachtagung "Voll-automatische Sortierung von Holz", Stuttgart-Vainhingen, 22.10.92; Internationales Seminar für die Sägewerksindustrie, Rosenheim, 11. - 14.01.93; 15. Dreiländer-Holztagung, Garmisch, 21. - 23.09.93; Betriebsführer-Seminar Holztechnikum Kuchl,

18. - 20.01.94; Deutscher Holzbautag 94 Nürnberg, 28.04. - 01.05. 1994) laufend unterrichtet.

Neben der Veröffentlichung in den entsprechenden Tagungsunterlagen erfolgten bislang 2 Veröffentlichungen in Fachzeitschriften:

Glos, P., Diebold, R. (1994):

Maschinelle Sortierung nach DIN 4074 zugelassen -Neue Chancen für den Holzleimbau

Mikado 2 (7/8) 79-83 Diebold, R., Glos, P. (1994):

Verbesserte Holznutzung durch neuartige maschinelle Festigkeitssortierung.

Holz als Roh- und Werkstoff 52 (5); im Druck

Darüberhinaus wurden die vorliegenden Ergebnisse den Arbeitsgremien der Nor-menausschüsse NABau und NHM zur Verfügung gestellt. Sie bildeten die wissen-schaftliche Grundlage für die Erarbeitung der in einem ersten Entwurf vorliegenden Ergänzung der für die Holzverwendung im Bauwesen zentralen Norm DIN 1052 und ermöglichte zudem die Aufnahme der maschinellen Holzsortierung in die Richtlinie zur Anwendung von DINV ENV 1995 Teil 1-1 "Eurocode 5: Entwurf, Berechnung und Bemessung von Holzbauwerken", die noch 1994 herausgegeben und bauaufsichtlich eingeführt werden soll.

10. Literaturverzeichnis

Anonymus, 1961: A positive stress rater.

Lumberm. 88 (10) : 41-63

Anonymus, 1969 : Sontrin timber selecting machine.

Timber Trades J. 270 (4854) : 55-56

Anonymus, 1980 : Stress grading through direct, non-contacting strength measurement with the Finnograder:

Firmenprospekt

Anonymus, 1993 : Möglichkeiten und Grenzen der Holzsortierung mit Ultraschall.

Holz-Zbl. 92/93: 1471

Anton, A., Bryant, LH. 1973: Mechanical stress grading of timber in Australia.

Proc. of lUFRO-meeting, Cape Town, Pretoria, Stellenbosch, 2:8-12 Atherton, G.H. 1980: Preliminary study of proportional limits

a predictor of ultimate strength in bending.

Forest Prod. J. 30 (11) : 47-53

Bechtel, F.K. 1985: Beam stiffness as a function of pointwise E with application to machine stress rating.

Proc. of Symp. on Forest Prod. Research International-Achievements and the Future, Pretoria, IV: paper 3-17

Bechtel, F.K.; Allen, J.R. 1987: Methods of implementing grain angle measurements in the machine stress rating process.

Paper presented at Sixth Nondestructive Testing of Wood Symposium, Washington State University, Pullman, WA, USA, Sept. 1987

Becker, H. 1967: Möglichkeiten der Anwendung von Ultraschall bei der Untersuchung von Holz und Holzspanplatten.

Holzforschung 21 : 135-145

Becker, H.F. 1973: Messung der Schubmoduln von Vollholz mit akustischen Torsionsschwingungen.

Holz Roh-Werkstoff 31 : 207-210

Bendtsen, B.A., Youngs, R.L 1981: Machine stress rating of wood: an overview. Proc. XVII IUFRO World Congress, Kyoto, Japan, Division 5 : 21-34

Booth, H.E. 1964: The machine grading of timber.

Aust. Timber J. 30 (8) : 81-89

Brundin, J. 1981: Machine stress grading - the relationship

between the modulus of rupture and the modulus of elasticity for Swedish redwood and whitewood.

Principles for programming of stress grading machines. Meddelande, Svenska Traforskningsinstitutet Sehe A No. 543

Bryant, P.A.V. 1979: The satuts of mechanical stress grading in South Africa and abroad.

CSIR Sepcial Report HOUT 174, Pretoria

Brynildsen, O.A. 1977: Moisture effect on bending strength and stiffness of European spruce.

Paper presented at CIBW18/IUFRO S5.O2-03 meeting, Princes Risborough

Burmester, A. 1967: Nachweis von Ästen im Kiefernholz durch Ultraschall.

Holz Roh- Werkstoff 25 : 157-163

Chui, Y. H., Smith, lan, 1991: The use of bending and shearmoduli for predicting bending strength of wood.

Forest Prod. J. 41 (4): 49-52

Colclough, P.R. 1988: Developing a mechanical timber stress grader.

Proc. 1988 International Conference on Timber Engineering.

Seattle, WA, USA, Sept. 19-22, 1988. Vol. 1, 333-339

Colling, F.; Scherberger M. 1987: Die Streuung des Elastizitätsmoduls in Brettlängsrichtung.

Holz Roh- Werkstoff 45 : 95-99

Covington, S.A., Fewell, A.R. 1975: The effect of change in moisture content on the geometrical properties, modulusof elasticity and stiffness of timber.

BRE current Paper CP 21/76

Curry, W.T. 1965: Progress in stress-grading of boards.

Timber Trades J. 254 (11)

Curry, W.T. 1969: Mechanical stress grading of timber.

Forest Prod. Res. Lab. Princes Risborough No. 18

Curry, W.T., Tory, J.R. 1976: The relation between the modulus of rupture and modulus of elasticity of timber.

BRE Current Paper CP 30/76

Curry, W.T 1976: The modulus of elasticity and modulus of rigidity of structural timber.

XVI IUFRO World Congress Norway, Proc. Division V : 167-175

Curry, W.T., Fewell, A.R. 1977: The relation between the ultimate tension and ultimate compression strength of timber and its modulus of elasticity.

BRE Current Paper CP 22/77

Curry, W.T., Fewell, A.R. 1980: Type approval testing of stress grading machines.

Princes Risborough Laboratory, BRE note N 34/80 DeBonis, A.L 1985: A new generation MSR machine for Accutech.

Inc. Proc. 5th Symp. on Nondestructive Testing of Wood., Pullman, WA, 491-508

DeBonis, A.L 1986: Stress waves produce lumber strength data.

Forest Industries 112 (3) : 32-33

Dzbenski, W. 1981: Versuche zur Anwendung der Ultraschall-Meßtechnik bei der Gütesortierung von Konstruktionsholz nach seiner Festigkeit.

Holzforschung u. Holzverwertung 33 : 105-110

Endersby, H.J. 1974: The relation between the ultimate tension and ultimate compression strength of timber and its modulus of elasticity.

BRE Current Paper CP 22/77

Ethington, R.L, Fleischer, H.O. 1973: A perspective on structural lumber in grading.

BRE Current Paper CP 9/80

Fewell, A.R. 1980: Relations between the moduli of elasticity of structural timber in bending.

BRE Current Paper CP 9/80

Fewell, A.R. 1982: Machine stress grading of timber in the United Kingdom.

Holz Roh- Werkstoff 40 : 455-459

Fewell, A.R., 1984: Timber stress grading machines.

BRE Information Paper IP 17/84

Foschi, R.O. 1987: A procedure for the determination of localized modulus of elasticity.

Holz Roh- Werkstoff 45 : 257-260

Foslie, A.M., Moen, K. 1968: Strength properties of Norwegian spruce. 1. Bending strength, modulus of elasticity and tensile strength tested on the structural sizes 3" x 8" and 2" x 4".

Norsk Treteknisk Institut! Meddelelse Nr. 33

Galligan, W.L, Bertholf, LD. 1963: Piezoelectric effect in wood.

Forest Prod. J. 13 (12) : 517-524

Galligan, W.L 1964: A Status Report: Nondestructive Testing in Wood.

Forest Prod. J. 14 (5) : 221-227

Galligan, W.L, Courteau, R.W. 1965: Measurement of elasticity of lumber with longitudinal stress waves and the piezo-electric effect of wood.

Proc. 2nd Symp. on Nondestructive Testing of Wood, Spokane, Wash. : 223-244 Galligan, W.L, Snodgrass, D.V. 1970 : Machine stress rated lumber: Challenge to design.

Proc. ASCE, J. of the Struct. Div 96 : 2639-2651

Galligan, W.L, Snodgrass, D.V., Crow, G.W. 1977: Machine stress rating: Practical concerns for lumber producers.

U.S.D.A. Forest Service General Technical Report FPL 7

Galligan, W.L, Gerhards, C.C., Ethington, R. L 1979: Evolution of tensile design stresses for lumber.

U.S.D.A. Forest Service General Technical Report FPL 2

Ganowicz, R., Guzenda, R., Plenzler, R. 1980: Einfluß der Temperatur auf den Elastizitätsmodul parallel zur Faserrichtung des Holzes.

Holztechnologie 21 (1) : 5-8

Gerhards, C.C. 1975: Stress wave speed and MOE of sweetgum ranging from 150 to 15 percent MC.

Forest Prod. J. 25 (4) : 51-57

Gerhards, C.C. 1978/1: Comparison of two nondestructive instruments for measuring pulse transit time in wood.

Wood Sei. 11 (1) : 13-16

Gerhards, C.C. 1978/2: Effect of earlywood and latewood on stress-wave measurements parallel to the grain.

Wood Sei. 11 (2) : 69-72

Gerhards, C.C. 1981: Effect of cross grain on stress waves in lumber.

U.S.D.A. Forest Serv. Res. Pap. FPL 368 Madison, Wis.

Gerhards, C.C. 1982/1: Effect of knots on stress waves in lumber.

U.S.D.A. Forest Serv. Res. Pap. FPL 384

Gerhards, C.C. 1982/2: Longitudinal stress waves for lumber stress grading: factors affecting applications: state of the art.

Forest Prod. J. 32 (2) : 20-25

Glos, P. 1978: Zur Bestimmung des Festigkeitsverhaltens von Brettschichtholz bei Druckbeanspruchung aus Werkstoff-u. Einwirkungskenngrößen.

TU München, Lab.f.d.Konstrukt. Ing. Bau, Ber. zur Zuverlässigkeitstheorie der Bauwerke, H. 35

Glos, P., Schulz, H. 1980: Stand und Aussichten der maschinellen Schnittholzsortierung.

Holz Roh- Werkstoff 38 : 409-417

Glos, P. 1981: Zur Modellierung des Festigkeitsverhaltens von Bauholz bei Druck-, Zug- und Biegebeanspruchnung.

TU München, Lab.f.d.Konstrukt.Ing.Bau, Berichte zur Zuverlässigkeitstheorie der Bauwerke, H. 61

Glos, P. 1982: Die maschinelle Sortierung von Schnittholz Stand der Technik - Vergleich der Verfahren.

Holz-Zbl. 108 : 153-155

Glos, P., Heimeshoff, B. 1982: Möglichkeiten und Grenzen der Festigkeitssortierung von Brettlamellen für den Holzleimbau.

Ingenieurholzbau in Forschung u. Praxis, Bruderverlag Karlsruhe: 41-47

Glos, P. 1983: Die technischen und wirtschaftlichen Möglichkeiten der Schnittholzsortierung im Mittel-und Kleinbetrieb.

SAH Bulletin 1983/1, 13-35

Glos, P., Diebold R. 1987: Einfluß verschiedener Sortierbedingungen auf die Biegefestigkeit von Bauholz (Kantholz)

Institut für Holzforschung München, Forschungsbericht 84 510

Glos, P., Gamm, A., Diebold, R. 1988: Ermittlung von Klassifizierungskriterien für einheimisches Fichtenschnittholz mit kleinen Querschnitten.

Institut f. Holzforschung München, Forschungsbericht 87503

Görlacher, R. 1984: Ein neues Meßverfahren zur Bestimmung des Elastizitätsmodul us von Holz.

Holz Roh-Werkstoff 42 : 219-222

Gourvitch, A., Lohmann, U. 1974: Stress grading-Studienreise nach England.

Holz-Zbl. 100 : 2256-2257

Govers, Ir.A. 1968: The relationship between modulus of rupture and modulus of elasticity ¡n European whitewood (spruce and fir) of structural size.

Houtinstituut TNO Delft

Green, D.W., Kretschmann, D.E. 1991: Lumber property relationships for engineering design standards.

Wood and Fiber ScL, 23 (3) : 436-456 Gruber.R. 1972: German project on stress grading.

Proc. Anglo/Scandinavian Conference of Stress Grading, Princes Risborough Harisch, K. 1992: Der Stand der Bildverarbeitung in der Holzindustrie.

Holz-Zbl. 106 :1579, 1583

Hansmann, C.J.L 1973: Mechanical stress grading operation in South Africa.

Proc. of IUFRO-5 meeting Cape Town, Pretoria, Stellenbosch, 2 : 415-427 Hearmon, R.F.S. 1966: Vibration testing of wood.

Forest Prod. J. 16 (8) : 29-40

Heimeshoff, B., Glos, P. 1980: Zugfestigkeit u. Biege-E-Modul von Fichten-Brettlamellen.

Holz Roh- Werkstoff 38 : 51-59

Hilbrand, H.C., Miller, D.G. 1966: Machine grading - theory and practice.

Forest Prod. J. 16 (11;12) : 28-34; 36-40

Hoffmeyer, P. 1978: The Pilodyn instrument as a non-destructive tester of the shock resistance of wood.

Proc. 4th Nondestructive Testing of Wood Symp., Vancouver, WA. 47-66

Hoffmeyer, P. 1981: Improving the efficiency of visual stress grading by means of the Pilodyn wood tester.

Paper presented at XVII IUFRO World Conference, Kyoto

Houldsworth, M.F. 1979: The effect of dimensional tolerances on machine stress graded timber.

BRE Information Paper IP 16/79

Hoyle, R.J. 1961: A nondestructive test for stiffness of structural lumber.

Forest Prod. J. 11 (6) : 251-254

Hoyle, R.J. 1965: Marketing experiences with machine stress rated lumber.

Proc. Second Symp. on the Nondestructive Testing of Wood, Spokane, Wash. : 37-42 Hoyle, R.J. 1968: Background to machine stress grading.

Forest Prod. J. 18 (4) : 87-97

Hutchison, J.D. 1984: Grading timber for specific applications.

Proc. Pacific Timber Eng. Conf., Auckland, New Zealand : 779-785 Ince, P.J. 1979: Cost of grading lumber by the machine-stressrating process.

Forest Prod. J. 29 (10) : 80-83

James, W.L, Hamill, D.W. 1965: Dielectric properties of Douglas-fir measured at microwave frequencies.

Forest Prod. J. 15 (2) : 51-56

James, W.L, Yen, Y.H., King, R.J. 1985: A microwave method for measuring moisture content, density, and grain angle of wood.

U.S.D.A. Forest Serv. Res. Note FPL-0250

Jayne, B.A. 1959: Vibrational properties of wood as indices of quality.

Forest Prod. J. 9 (11): 413-416

Johansson, B., Johansson, C.-J. 1987: Maschinen-Festigkeitssortierung von Holz in Schweden.

Zulassungs-und Überwachungssysteme, Erfahrungen Arbetsrapport SP-AR 1987 : 26 Byggnadsteknik, Boras Johansson, C.-J.: Calibration board for mechanical grading machines.

Swedish National Testing Institute

Johansson, C-J., Brundin, J., Gruber R.: Stress Grading of Swedisch and German Timber. A comparison of machine stress grading and three visual grading systems:

Swedish National Testing and Research Institute, Building Technology, SP REPORT1992 Johnson, J.W. 1977: Selection of low-strength pieces by non-destructive testing: Douglas-fir and

Hem-fir 2 by 4s in flexure.

Forest Prod. J. 27 (8) : 53-56

Johnson, R.A. 1980: Current statistical methods for estimatinglumber properties by proofloading.

Forest Prod. J. 30 (1) : 14-22

Jung, J. 1982: Properties of parallel-laminated veneer from stress-wave-tested veneers.

Forest Prod. J. 32 (7) : 30-35

Kaiserlik, J.H., Pellerin, R.F. 1977: Stress wave attenuation as an indicator of lumber strength.

Forest Prod. J. 27 (6) : 39-43

Kaiseriik, J.H. 1978: Nondestructive testing methods to predict effect of degradation on wood:

a critical assessment.

U.S.D.A. Forest Service General Techninical Report FPL 19

Keller, R. 1971: Ermittlung der mechanischen Eigenschaften und der Dichte von Holz mit Hilfe von Röntgenstrahlen.

Holztechnologie 12 : 225-232

Kennedy, D.E. 1969: A new look at mechanical lumber grading.

Forest Prod. J. 19 (6) : 41-44

Kennedy, J. 1978: Ultrasonic testing of wood and wood products.

Proc.4th Nondestructive Testing of Wood Symp., Vancouver, WA : 185

Kessel, M.H., Sandoz, J.L 1989: Zur Effizienz der Festigkeitssortierung von Fichtenkantholz.

Holz Roh- Werkstoff 47 : 279-284, 323-327

Kessel, M.H. 1990: Festigkeitsuntersuchungen von Eichenbalken.

Bauen m. Holz 1990 (3) : 174-180

Kharadly, M. 1985: Microwave diagnostics for stress-rating of dimension lumber.

Proc. 5th Symposium on Nondestructive Testing of Wood, Pullman, WA, 445-464 King, R.J. 1978: Microwave electromagnetic nondestructive testing of wood.

Proc. 4th Nondestructive Testing of Wood Symp., Vancouver, Wash. : 121-134 Kitazawa, G. 1950: Nondestructive testing for forest products.

Paper presented at 4th Annual National Meeting of Forest products Research Society, Portland, Or.

Klinkhachorn, P., Franklin, J.P., McMillin, C.W., 1988: Automated computer grading of hardwood lumber.

Forest Prod. J. 38 (3) : 67-69

Knuffel, W.E. 1984: An improved visual and mechanical stress-grading system for S A pine timber.

CSR Special Report HOUT 318, Pretoria

Kolb, H., Gruber, R. 1981: Radiometrisches Verfahren für die Holzsortierung. Teil 2: Grundlagen für die Anwendung

Holz Roh-Werkstoff 39 : 367-377

Konarski, B., Wazny, J. 1977: Zusammenhang zwischen der Ultraschallgeschwindigkeit und den mechanischen Eigenschaften pilzbefallenen Holzes.

Holz Roh- Werkstoff 35 : 341-345

Krohn, H., Palm, K. 1981: Radiometrisches Verfahren für die maschinelle Holzsortierung. Teil 1:

Entwicklung u. Beschreibung des Verfahrens.

Holz Roh-Werkstoff 39 : 207-210

Kubier, H. 1965: Maschinelle Gütesortierung des Holzes nach der Festigkeit.

Holz-Zbl. 91 : 89-90

Kufner, M. 1977: Maschinelle Schnittholzsortierung und ihr möglicher Einfluß auf die Holzverwertung.

Holz Roh- Werkstoff 35 : 173-178

Kufner, M. 1978: Elastizitätsmodul und Zugfestigkeit von Holz verschiedener Rohdichte in Abhänigkeit vom Feuchtegehalt.

Holz Roh- Werkstoff 36 : 435-439

Lackner, R.; 1990: Festigkeit und Sortierung von schnellgewachsenem Fichtenholz.

Holzforschung u. Holzverwertung 42 : 3-6

Lam, F.; Varoglu, E. 1988: Grading MSR lumber for the optimization of market value.

Proc. 1988 International Conference on Timber Engineering.

Seattle, WA, USA, Sept. 19-22, 1988. Vol. 1, 340-344 Lam, F., Foschi, R.O., Barrett, J.D., He, Q.Y. 1993:

Modified algorithm to determine localized modulus of elasticity of lumber.

Wood Sei. Technol. 27 : 81-94

Lee.l.D.G. 1958: A nondestructive method for measuring the elastic anistropy of wood using ultrasonic pulse technique.

J. Inst. Wood Sei. 1 (1) : 43-57

Lee, I.D.G.1959: Non-destructive testing of wood by vibration methods.

J. Inst. Wood Sci 1 (3) : 21-32

Lee.l.D.G. 1965: Ultrasonic pulse velocity testing considered as a safety measure for timber structures.

Proc. 2nd Symp. on the Nondestructive Testing of Wood,Spokane, Wash., 185-203 Leicester, R.H.: Rogue Factors in proof grading.

CSIRO Division of Construction and Engineering, Melbourne, Australia Leicester, R.H. 1982: Proof Grading I.

An overview. Proc. meeting of IUFRO S5.02 Wood Eng. Group, Boras, Sweden : 297-309 Leicester, R.H. 1984/1: Proof grading.

Proc. Pacific Timber Eng. Conf. Auckland, New Zealand, III : 768-778 Leicester, R. H. 1984/2: Structural grading systems.

Proc. Pacific Timber Eng. Conf. Auckland, New Zealand, III : 742-751 Leicester, R.H. 1984/3: Use of continuous proof testing machines.

CSIRO Division of Building Research, Melbourne, Australia. Draft report 83/44 Leicester, R. H. 1985: Proof grading technique.

Proc. Symp. on Forest Prod. Research International-Achievements and the Future, Pretoria,IV: paper 3-11

Logan, J.D. 1978: Machine stress rating.

Proc. 4th Nondestructive Testing of Wood Symp., Vancouver, WA : 285-303 Logan, J.D. 1985: Machine stress rating in North America.

Proc. Symp. on Forest Prod. Research International-Achievements and Future, Pretoria, IV:

paper 3-15

Lohmann, U.; 1990: Festigkeitssortierung - Chance fur den Holzhandel.

Holz-Zbl. Nr. 53/54 : 865-866

Lovegrove, R. 1991: Within-piece strength and stiffness variability of timber.

Part 1. Proc. 1991 Internat. Timber Eng. Conf., London

Lundberg, C.J., Thunell, B. 1978: Machine stress rating of large and small dimensions of Swedish redwood and whitewood.

Svenska Traforskningsinstitutet, Meddelande, Serie A No.48 Lynn, A.P. 1982: An Introduction to the analysis and processing of signals.

Second Edition 1982, The Macmillan Press Ltd. Hong Kong,

Madsen, T.L 1980: The efficiency of visual and mechanical stress grading of normal spruce timber, and the possibilities of improving the methods by means of the Pilodyn instruments or additional ring width limits.

Proc. meetings of IUFRO S5.02 Wood Engineering Group, Oxford, UK : 93-117

Madsen, B., Knuffel, W. 1982: Improving mechanical grading oflumber by reducing the bendingspan and by using the "dual" grading method.

CSIR Special Report HOUT 260, Pretoria

Madsen, B., Mindess S. 1984: The influence of the characteristics of the testing machine on the strength of lumber

Department of Civil Engineering University of Br.Columbia, Vancouver, V6T 1W5 Marin, LA., Woeste, F.E. 1982: Reverse proof loading.

Forest Prod. J. 32 (10) : 53-55

Marra, G.G., Pellerin, R.F., Galligan, W.L 1966: Nondestructive determination of wood strength and elasticity by vibration.

Holz Roh- Werkstoff 24 : 460-466

May, H.A. 1975: Zur maschinellen Festigkeitssortierung.

Holz-Zbl. 101 : 1161-1162

McDonald, K.A. 1978: Lumber defect detection by ultrasonics.

U.S.D.A. Forest Serv. Res. Pap. FPL 311

McLain, T.E., Woeste, F.E. 1988: Proof test damage valuation with southern pine lumber.

Forest Prod. J. 38 (5) : 31-32

McLauchlan, T.A.,Norton, JA.Kusec, D.J. 1973: Slope-of-grain indicator.

Forest Prod. J. 23 (5) : 50-55

McLauchlan, T.A., Kusec, D.J. 1978: Continuous noncontactslope-of-grain detection.

Proc. 4th Nondestructive Testing of Wood Symp., Vancouver, Wash. : 67-76 Molenda, Z., Jankiewicz, B. 1977: Technologie u. Organisation bei der Herstellung von

Bauschnittholz mit Anwendung der Festigkeitssortierung.

Holztechnologie 18 : 43-45

Mothershead, J.S., Stancey, S.S. 1965: Applicability of radiography to inspection of woodproducts.

Proc. 2nd Symp. on Nondestructive Testing of Wood, Spokane, Wash. : 307-331 Müller, P.H. 1964: Mechanical stress-grading of structural timber.

Paper presented at the Symp. on Structural Timber, Pretoria, CSIR Ref. No. RU 1.25 Müller, P.H. 1968: Mechanical stress-grading of structural timber in Europe, North America and

Australia.

Wood Sei. Technol. 2 : 43-72

Natterer, J., Marchand, G., Fux, W. 1982: Statistisch gesicherte Untersuchungen vonVerformungs-kenngrößen biegebeanspruchter Bauteile aus Schweizer Holz.

Ecole Polytechnique Federale de Lausanne, Chaire de Construction en Bois, Bericht zu Projekt 2.483-0.79

Orosz, I. 1968: Some nondestructive parameters for prediction of strength of structural lumber.

U.S.D.A. Forest Serv. Res.Pap. FPL 100

Orosz, I. 1969: Modulus of elasticity and bending-strength ratio as indicators of tensile strength of lumber.

J. of Materials 4 : 842-864

Orosz, I. 1975: Derivation of tensile strength ratio by second-order theory.

Wood Sei. Technol. 9 : 25-44

Orosz, I. 1976: Relationship between apparent modulus of elasticity, gage length, and tensile strength of lumber.

Wood Sei. Technol. 10 : 273-291

Orosz, I. 1977: Relationship between transverse free vibration E and other properties as affected by knots.

Forest Prod. J. 27 (1) : 23-27

Pellerin, R.F. 1965: A vibrational approach to nondestructive testing of structural lumber.

Forest Prod. J. 15 (3) : 93-101

Pellerin, R.F., Strickler, M.D. 1971: Tension proof loading of lam stock for laminated beams.

Forest Prod. J 21 (5) : 50-55

Pellerin, R.F., Strickler, M.D. 1972: Proof loading of tension laminations for large gluedlaminated beams.

Forest Prod. J. 22 (10) : 24-30

Pellerin, R.F. 1976: Status of NDT in the world today.

Wood and Fiber 8 (3) : 211-214

Pellerin, R.F. 1976: Nondestructive evaluation of wood and wood products.

Proc. XVI IUFRO World Congress, Oslo, Div. V : 184-189

Pellerin, R.F., Strickler, M.D. 1976: Tension proof loading for southern pine beams.

J. of the Struct. Div. Proc. of the ASCE 102 : 645-657

Pellerin, R.F., Strickler, M.D. 1977: Southern pine beams from E-rated and proof loaded lumber.

J. of the Struct. Div., Proc. of the ASCE 103 : 270-274

Pierce, C.B. 1980: Strength prediction and sampling of timber in structural sizes.

Proc. IUFRO-5 Conference, Oxford : 69-78

Plinke, Burkhard 1990: Optische Fehlererkennung an Holz.

Holz-Zbl. 135, 2133, 2135-2136

Pope, D.J., Matthews, F.W., 1994: A Comparison of deconvolution techniques to improve MOR estimation from stress grading machine output.

Wood Sei. Technol. : Im Druck

Porter, A.W., Kusec, D.J., Olson, S.L 1972: Digital computerfor determining modulus of elasticity of structural lumber.

Dep. of Environment, Canadian Forest Serv. WFPL Info. Rep. VP-X-99, Vancouver, Brit.Columbia

Ross, R. J. 1985: Stress wave propagation in wood products

Proc. 5th Symp. on Nondestructive Testing of Wood. Pullman, WA, 291-318

Ross, R.J., Vogt, J.J. 1985: NDE of particle and fiber compsites with longitudinal stress waves.

Proc. of 5th Symp.on Nondestructive Testing of Wood, Pullman, WA, 121-157 Raum, C, Müller, E. 1990: Visuelle Sensorsysteme zur Erkennung von Holzfehlern.

Holztechnologie 30 (3) : 127-128

41

Samorzewski, J. 1968: Untersuchungen zum Vergleich des E-Moduls von Kiefernholz bei statischer Biegung unter 1-Punkt und 2-Punkt-Belastung sowie bei verschiedenen Verhältnissen von Stützweite zu Probenhöhe.

Holztechnologie 9 (3) : 175-178

Samson, M. 1984: Measuring general slope of grain with the slope-of-grain indicator.

Forest Prod. J. 34 (7/8) : 27-32

Samson, M. 1984: Finite Element model for predicting modulusof elasticity of lumber measured by stress-grading machines.

Wood and Fiber Sei. 17 (4) : 490-503

Samson, M.; 1985: Predicted and actual performance of two laboratory stress-grading machines employing differnt support conditions.

Wood and Fiber Sei: 18 (3) : 478-489

Samson, M.; 1985: Finite element model for predicting modulus of elasticity for lumber measured by stress grading machine.

Proc. 5th Symp. on Nondestructive Testing of Wood, Pullman WA, 425-443 Samson, M.; 1986: Dynamic behavior of lumber in stress-grading machines.

Paper presented at the 18th IUFRO World Congress Ljubljana, Yugoslavia

Samson, M.; 1987: Effect of speed on the accuracy of stress grading machines for lumber.

Wood Sei. Technol. 21 (3) : 281-293

Samson, M.; Hailey J.R.T.; 1988: International accomplishments in non-destructive testing and evaluation of wood.

Paper presented at the 42nd Annual Meeting of Forest Products Research Society,Quebec, Canada, Proj. 12-12-001

Samson, M.; Huot, B.; 1989: Dynamic behaviour of nonuniform lumber in stress-grading machines.

Financial support of the National Science and Engineering Research Council of Canada Sandoz, J.L 1989: Grading of construction timber by ultrasound.

Wood Sei. Technol. 23 : 95-108

Scherman, R.E.E. 1985: Design and operation of Cook Bounders stress grading machine systems.

Proc. Symp. on Forest Prod. Research International Achievements and the Future, Pretoria, IV: paper 3-13

Schlumbom, H.F. 1976: Die maschinelle Festigkeitssortierung von Bauholz.

Holz-Zbl. 102 : 1151-1154

Schmidt, T. 1975: Sambandet mellan draghallfasthet och böjstyvhe for svenskt furuochgranvirke.

Svenska Traforskningsinstitutet, Meddeiande Serie B No. 331

Schneider, H. 1966: Verfahren zur Berechnung von Elastizitäts- u. Schubmodul aus Eigenfrequenzen stabförmiger Proben.

Materialprüfung 8 (5) : 169-174

Shultz, T.J. 1969: Acoustical properties of wood, a critique of literature and a survey of practical applications.

Forest Prod. J. 19 (2) : 21-29

Senft, J.F., Suddarth, S.K., Angleton, H.D. 1962: A new approach to stress grading of lumber.

Forest Prod. J. 12 (4) : 183-186

Strickler, M.D., Pellerin, R.F. 1974: Glued-laminated douglas fir beams from E-rated and tension proof loaded lumber. Washington State University, College of Engineering, Bulletin No. 337

Sunley, J.G., Curry, W.T. 1962: A machine to stress-grade timber.

Timber Trades J. 241 (4472) : 73-75

Sunley, J.G., Hudson, W.M.1964: A report of research on the machine grading of lumber inBritain.

Forest Prod. J. 14 (4) : 155-158

Szymani, R., McDonald, K.A. 1981: Defect detection in lumber: state of the art Forest Prod. J. 31 (11) : 34-44

Thunell, B. 1970: Flexural strength-stiffness relationships for structural Swedish softwoods.

Paper och Tra 5 : 309-322

Todd, R.L 1978: Development of markets for MSR lumber.

Proc. 4th Nondestructive Testing of Wood Symposium, Vancouver, Wash. : 279-281 Tory, J.R. 1978: Machine stress grading in the United Kingdom: Theory into practice

Proc. 4th Nondestructive Testing of Wood Symposium, Vancouver, Wash. : 77-82

Vinopal, G.W. 1980: Determination of the combined influence of density and knots on the mechanical properties of full-size structural timber.

Vinopal, G.W. 1980: Determination of the combined influence of density and knots on the mechanical properties of full-size structural timber.