document

Induction heating of mastic containing conductive fibers and fillers

García, Á. (author), Schlangen, E. (author), Van de Ven, M. (author), Van Vliet, D. (author)

The objective of this research is to examine the induction heating of mastic through the addition of electrically conductive fillers and fibers (graphite and steel wool), and to prove that this material can be healed with induction energy. The effect of fibers content, sand–bitumen ratio and the combination of fillers and fibers on the induction...

journal article

document

Crack repair of asphalt concrete with induction energy

García, A. (author), Schlangen, E. (author), Van de Ven, M. (author), Van Vliet, D. (author)

It is well known that the healing rates of asphalt courses increase with the temperature. A new method, induction heating, is used in this paper to increase the lifetime of asphalt concrete pavements. Mastic will be first made electrically conductive by the addition of conductive fibers. Then it will be heated via induction energy. This will...

journal article

document

Hydrogen embrittlement 0f 4340 steel by cadmium electroplating; interim report no. 1.

Wanhill, R.J.H. (author), de Rijk, P. (author)

report 1973

document

Rate effects on residual strength of flawed structures and materials

van Leeuwen, H.P. (author), Schra, L. (author)

The literature is reviewed with respect to: - tests conducted to investigate crack re-initiation under dynamic load and arrest of a running crack - metallurgical sources of rate effects - available data for aerospace engineering materials - mechanical sources of rate effects, i.e. dynamic crack tip stresses and kinetic energy effects Conclusions...

report 1975

document

A quantitative analysis of hydrogen-induced cracking

van Leeuwen, H.P. (author)

Internal hydrogen embrittlement, stress corrosion cracking and external hydrogen embrittlement of high strength steel are analysed. They are found to have lattice decohesion as a common source.

report 1976

document

The reclanation of improperly cadmium electroplated high strength steel parts

van Leeuwen, H.P. (author), de Rijk, P. (author), Boogers, J.A.M. (author), Huisman, H.N. (author), Wanhill, R.J.H. (author)

Circumferentially notched round specimens of 4340 type steel have been plated in a galvanic bath known to be embrittling. The specimens were reclaimed by stripping and baking. Half the specimens were replated in a non-embrittling bath. Reclamation did not remove all traces of hydrogen embrittlement, but raised the threshold stress to such a...

report 1979

document

The application of fracture mechanics to the growth of creep cracks

van Leeuwen, H.P. (author)

The literature concerning the application of fracture mechanics to the growth of creep cracks is discussed. As an introduction it is shown that linear elastic fracture mechanics have been applied successfully to the residual strength of brittle materials crack growth due to stress corrosion and crack growth due to fatigue. Next the methods are...

report 1983

document

Compressibility and fugacity of gaseous hydrogen

van Leeuwen, H.P. (author)

The concept of fugacity is explained. Application of compressibility and fugacity data in hydrogen embrittlement calculations is discussed. Equations of state are reviewed. Compressibility factors and fugacity coefficients are calculated. A best estimate is proposed.

report 1983

document

Computation of post-bifurcation and post-failure behavior of strain-softening solids

De Borst, R. (author)

journal article 1987

document

Spacecraft sustained load fracture control

Wanhill, R.J.H. (author)

The opportunities for sustained load fracture control in spacecraft are indicated. Emphasis is given to verification by small-scale laboratory testing.

report 1989

document

Analysis of concrete structures under thermal loading

De Borst, R. (author), Peeters, P.P.J.M. (author)

journal article 1989

document

A comparison of different crack models applied to plain and reinforced concrete

Feenstra, P.H. (author), De Borst, R. (author), Rots, J.G. (author)

conference paper 1991

document

COMPUTATIONAL MODELLING OF IMPACT TESTS ON STEEL FIBRE REINFORCED CONCRETE BEAMS. COMPUTATIONAL MECHANICS OF COMPOSITE MATERIALS

Sluys, L.J. (author), De Borst, R. (author)

journal article 1992

document

Cavitatie

Kolkman, P.A. (author)

Algemene beschouwingen, cavitatie-inceptie getallen bij schuiven, voorwerpen en wanden

report 1992

document

Cyclic compression of imperfect steel plates

Kaminski, M.L. (author)

doctoral thesis 1992

document

Kinetics of internal nitriding of an Fe-7at.% Al alloy

Geerlofs, N. (author), Brakman, C.M. (author), Colijn, P.F. (author), Van der Zwaag, S. (author)

conference paper 1994

document

Thermodynamic Analysis of Isothermal Transformations of Hypo-Eutectoid Fe-C Austenites

Krielaart, G.P. (author), Onink, M. (author), Brakman, K.M. (author), Tichelaar, F.D. (author), Mittemeijer, E.J. (author), Van der Zwaag, S. (author)

journal article 1994

document

Nucleation and growth of ferrite and perlite in a medium carbon steel studied using neutron depolarization

Te Velthuis, S.G.E. (author), Rekveldt, M.T. (author), Van der Zwaag, S. (author)

conference paper 1995

document

Neutron depolarisation: A novel technique for studying phase transformation kinetics in steels

Te Velthuis, S.G.E. (author), Rekveldt, M.T. (author), Van der Zwaag, S. (author)

journal article 1995

document

A survey of plasticity and damage-based models for FE analysis of fracture in concrete

Feenstra, P.H. (author), De Borst, R. (author)

conference paper 1995