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The shear response of metallic square honeycombs
www-mech.eng.cam.ac.uk/profiles/fleck/papers/226.pdf4 Oct 2008: First, we describe the procedure used to manufacturestainless steel square honeycomb and our test protocol. ... The shear tests were performed on a 150 kN screw driven test machine at an applied macroscopicnominal shear strain-rate of 104 s1. -
doi:10.1016/j.ijsolstr.2006.07.015
www-mech.eng.cam.ac.uk/profiles/fleck/papers/220.pdf10 Aug 2009: 3.1. Uniaxial tests on face-sheet materials. The tests on the composite face-sheets were conducted in a screw-driven test machine at a nominal appliedstrain rate of 103 s1. ... The axial strainin both the compression and tension tests was measured by -
A Fracture Criterion for the Notch Strength of High ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/304.pdf11 Mar 2013: the slow tests of Wang et al. (2005b) will be analysed; here, the test time. ... failure locus applies to test data on AISI 4135 steel, but now for rapid tests in. -
UHMWPE_beams
www-mech.eng.cam.ac.uk/profiles/fleck/papers/298.pdf29 May 2013: UHMWPE laminates. The tensile tests were conducted in a screw-driven test. ... analogous manner to the static stretch-bend tests reported above. 4.1 Dynamic test protocol. -
doi:10.1016/j.actamat.2004.04.011
www-mech.eng.cam.ac.uk/profiles/fleck/papers/152.pdf7 Jul 2004: Its originality lies in two main points: firstly,. we use original test conditions. ... tests (e.g. test no. 1 for dry sugar at _ea 0:16%/s).In order to overcome this difficulty and accurately. -
J3 d2 deep pen injec 180810 kerstyn
www-mech.eng.cam.ac.uk/profiles/fleck/papers/259%20(2).pdf31 Aug 2010: ratios. 2 Penetration tests using a solid punch. 2.1 Test method. ... and leakage of the internal lipid fluid. 4 Injection tests. 4.1 Test methods. -
doi:10.1016/S0020-7403(03)00136-X
www-mech.eng.cam.ac.uk/profiles/fleck/papers/155.pdf7 Jul 2005: The pro7les at selected stages ofdeformation are shown by photographs taken from multiple interrupted tests. ... Compression tests on panels. Measured collapse response of egg-box panels at low velocity. -
1 Failure mechanisms of a notched CFRP laminate under ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/313.pdf26 Apr 2016: element model in a subsequent publication [1]. 2. Test Method. 2.1 Specimen manufacture. ... direct compression, in-plane shear, and combined tension and shear2. Additionally, interrupted tests. -
Oliver A. Shergold Norman A. Fleck1 Department of…
www-mech.eng.cam.ac.uk/profiles/fleck/papers/190.pdf10 Sep 2006: Fig. 4 Sketches of tests used to measure the toughness of asolid, „a… the trouser tear test and „b… the scissor tear test. ... 5 mm in diam-eter at a similar speed to the human skin penetration tests. -
doi:10.1016/j.jbiomech.2005.08.028
www-mech.eng.cam.ac.uk/profiles/fleck/papers/208.pdf2 Nov 2006: The. discharge characteristics of the liquid jet were measured using a custom-built test instrument. ... Yeoh, 1987)suggest that the measured toughness JIC is sensitive tothe type of test performed. -
1 MECHANICAL PROPERTIES OF CATHODE MATERIALS FOR LITHIUM ION ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/384.pdf14 Aug 2023: In such. indentation tests, an indentation tip is lowered onto the surface of the test specimen and. ... modulus and hardness obtained from indentation tests are plotted against the size of the. -
1 The Effect of Matrix Shear Strength on the ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/328.pdf27 Dec 2017: . . out-of-plane, longitudinal shear test. ... on the load-displacement response. Specifically, repeat tests were performed on specimens of. -
Finite elements for materials with strain gradient effects
www-mech.eng.cam.ac.uk/profiles/fleck/papers/95.pdf4 Aug 2005: Three types of numerical test were performed: (1) patch tests for a 2-D mesh of elements underuniform loading; (2) 1-D boundary layer analysis and (3) 2-D stress analysis ... Patch test. All types of element were subjected to patch tests as shown in -
doi:10.1016/j.ijmecsci.2004.04.004
www-mech.eng.cam.ac.uk/profiles/fleck/papers/160.pdf7 Jul 2005: 2.6%, 6.6%, and 13.3%, were used. 1 Tension, compression, and shear tests were performed on foamsamples of all three densities using a screw-driven Instron 5500R test machine. ... Compression tests using a Celanese test rig were conducted on three -
Carbon Nanotube Conductive Additives for Improved Electrical and…
www-mech.eng.cam.ac.uk/profiles/fleck/papers/334.pdf4 Sep 2018: in the electrochemical tests, which show that after bending, only the electrodes with 20 wt% of. ... same bending cycles. Further, mechanical tests show the CNT based films can have Young’s. -
1 THE MECHANICAL AND ELECTRICAL PROPERTIES OF DIRECT-SPUN CARBON ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/338.pdf29 Oct 2018: Additional details of helium pycnometry. are given in Appendix A. Uniaxial tensile tests were performed using a screw-driven test machine, with the loading direction inclined. ... In-situ. tensile tests were conducted with a micro-test stage equipped -
1 spsFsea c�clhchhh atscnhp r Jsb J Downlo F. ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/244.pdf27 Jul 2009: These experiments are now reported. 3 Experimental InvestigationA series of compressive tests was performed on square honey-. ... 3c. A series of compression tests was performed on the macro-scopic sandwich panels. -
doi:10.1016/j.ijmecsci.2006.01.020
www-mech.eng.cam.ac.uk/profiles/fleck/papers/179.pdf24 Apr 2006: Test material and experimental procedure. A series of shear collapse experiments has beenconducted on conical frusta. ... Introduction. Shear collapse experiments. Test material and experimental procedure. Measured collapse response in shear. -
2013-02-19 Luc Paper Drop Weight Text
www-mech.eng.cam.ac.uk/profiles/fleck/papers/301.pdf29 Jan 2014: initial peak load measured in the drop-weight tests exceed those measured under. ... Y-frame sandwich beam in the drop-weight tests. The photographs show the. -
erimen-. Threellapse rive thently, thehe face odelsbeams;ns. It isen…
www-mech.eng.cam.ac.uk/profiles/fleck/papers/188.pdf17 Jun 2005: s̄= 0.034 and ā = 0.1. Test geometries are marked on the map. ... Tensile specimens of dog-bone geometry were cut fromaluminium face sheets. The tensile tests were performed in ahydraulic test machine at a strain rate of 10-4 / s; the axial swas -
doi:10.1016/j.ijmecsci.2007.07.007
www-mech.eng.cam.ac.uk/profiles/fleck/papers/233.pdf10 Aug 2009: Consequently, the face-sheets of the Y-frame sandwich could slide past eachother during the uniaxial compression test. ... A pair of specimens was usedin each double-lap shear test, again using the apparatussketched in Fig. -
doi:10.1016/j.ijsolstr.2005.06.079
www-mech.eng.cam.ac.uk/profiles/fleck/papers/195.pdf31 Jan 2006: Neglecting this contribution yields an error of<5% over the entire range of test conditions. ... Since the core crushing velocity inthe beam tests is roughly constant at prescribed impulse (Fig. -
Size effects in a power law creeping layer under compression or…
www-mech.eng.cam.ac.uk/profiles/fleck/papers/403.pdf1 Sep 2023: below. The pillar compression tests of Xu et al. (2017) found that the yield. ... of 0.05 s1 in the indentation test. In consistent manner, Herbert et al. -
Periodic Cellular Metals
www-mech.eng.cam.ac.uk/profiles/fleck/papers/163a.pdf4 Nov 2013: 5.3 Beam Tests Tests performed on beams in 3-point bending have been designed to probe failure by core shear and face yielding. ... All other results used in this article refer to tests performed in this range. -
03pa0343
www-mech.eng.cam.ac.uk/profiles/fleck/papers/180.pdf6 Oct 2004: test performed. Scissor tear tests maintain a sharp crack tip and give a low toughnessvalue of 2.5 kJ m2 for human skin. ... Consequently, the toughnessvalues from trouser-tear tests are used to compare the penetration experiments withthe model -
The role of defects in dictating the strength of brittle honeycombs…
www-mech.eng.cam.ac.uk/profiles/fleck/papers/352.pdf1 May 2019: used in the follow-on study at elevated temperature.). 2.2. Test method. ... labelled Test I) of relative density ρ 0.11 is shown in Fig. -
PII: S0020-7403(00)00069-2
www-mech.eng.cam.ac.uk/profiles/fleck/papers/129.pdf7 Jul 2004: independent shear testdata (from a double lap shear test, with foam of thickness 20mm). ... A.3) that the yield surface can beestimated by simply measuring in a uniaxial test. -
The three-point bending of Y-frame and corrugated core sandwich beams
www-mech.eng.cam.ac.uk/profiles/fleck/papers/274.pdf2 Aug 2012: We test this hypothesis by comparing the indentationdisplacement dI with the total displacement d at the peak load, asfollows. ... equal to thosemeasured in the three-point bend tests on the clamped andsimply supported beams. -
1 wmpcdnr caastcwlead�trpe taesc Js 6 Downloa D. D. ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/223.pdf19 Dec 2008: 2.4 Dynamic Test Protocol. The dynamic out-of-plane com-ressive response of the square honeycombs was measured from aeries of direct impact tests in which the forces on the ... Fig. 5 Stress versus time history measured in the Kolsky barduring a -
doi:10.1016/j.ijsolstr.2008.03.017
www-mech.eng.cam.ac.uk/profiles/fleck/papers/243.pdf10 Aug 2009: 2a and b, respectively. These compression tests were conducted on 6 mm 6 mm 6 mm cuboidal specimens in ascrew-driven test machine with the specimens compressed between lubricated flat platens. ... A select number of repeat tests were conducted for each -
Creep failure of honeycombs made by rapid prototyping P. ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/353.pdf29 May 2019: hydraulic test machine at a nominal strain rate of ε̇ = 4 104 s1. ... The tests were conducted at 100 C in a. temperature-controlled chamber with a glass window for in-situ observation of the specimen during the test. -
doi:10.1016/j.ijimpeng.2004.07.012
www-mech.eng.cam.ac.uk/profiles/fleck/papers/177.pdf23 May 2005: 1. 4. Experimental results and comparison with theory. 4.1. Direct impact tests. ... Direct impact tests. Normal impact of a free mass. Experimental results and comparison with theory. -
Mechanical properties of PMMA-sepiolite nanocellular materials with a …
www-mech.eng.cam.ac.uk/profiles/fleck/papers/355.pdf3 Oct 2020: nanocomposites. Single edge notch bend tests are conducted to relate the fracture toughness. ... uniaxial compression tests of the solid and cellular nanocomposites. The solid PMMA is. -
UHMWPE_plates
www-mech.eng.cam.ac.uk/profiles/fleck/papers/299.pdf29 May 2013: 2a. The tensile tests were conducted in a screw driven test machine at a nominal applied strain rate of 103 s1 with the nominal stress determined from the test machine load ... In most cases, failure/penetration of the plates was clearly seen after -
e ele-of thetionles, iscretetainedpe of inuum Akke S. J. ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/153.pdf1 Jul 2004: These predictions are compared to exmental results obtained from triaxial tests on an aggregate of s. ... de-af-. ansti-. is. computed by means oftrue triaxial tests, wherein the three prin-cipal stresses depicted in Fig. -
PII: S0020-7683(97)00112-1
www-mech.eng.cam.ac.uk/profiles/fleck/papers/86.pdf7 Jul 2004: The 6-noded triangle with one-point reduced integration fails both the single element test and the patch test (it passes both tests for plane strain defor- mation). ... and Zdunek, A. B. (1989) A theoretical study of the Brine1 hardness test. -
PII: S0022-5096(99)00082-4
www-mech.eng.cam.ac.uk/profiles/fleck/papers/106.pdf6 Jul 2005: 1. Uniaxial compression testsUniaxial compression tests were performed using a standard screw driven test. ... Repeated uniaxial and hydrostatic tests showed that the stressversus strain curves of Fig. -
L. St-Pierre N. A. Fleck1e-mail: naf1@eng.cam.ac.uk V. S. Deshpande…
www-mech.eng.cam.ac.uk/profiles/fleck/papers/285.pdf2 Aug 2012: The mass distribution ofthe test geometries is indicated for two choices of areal mass. ... 3. 3 Experimental Results. The three-point bending tests were conducted using a 100kN screw driven test machine with a constant cross-headvelocity of _d5103 mm/s. -
Dynamic failure of clamped circular plates subjected to an underwater …
www-mech.eng.cam.ac.uk/profiles/fleck/papers/253.pdf4 Oct 2008: Post-test photographs of the h = 0.25 mm copperplates are shown in Figure 3. ... 2.2. Specimen configuration. 2.3. Test protocol. 2.4. Material properties. 3. Summary of experimental findings. -
doi:10.1016/j.ijsolstr.2005.07.006
www-mech.eng.cam.ac.uk/profiles/fleck/papers/205.pdf15 Feb 2006: 22 mm. These lengths correspond to the two core thicknesses employed in the sandwich tests. ... Test protocol. Experimental results. Finite element simulations. Constitutive description. Comparison of finite element predictions and measurements. -
A micromechanical model for the Young’s modulus of adipose tissue
www-mech.eng.cam.ac.uk/profiles/fleck/papers/275.pdf25 Oct 2010: 1 Advanced Rheometric Expansion System, TA Instruments, USA. 2.2. Visco-elastic tests on the lipid. ... Tests were only per-formed at 25 C, due to limitations of the test equipment. -
PII: S0997-7538(00)00158-3
www-mech.eng.cam.ac.uk/profiles/fleck/papers/116.pdf6 Jul 2005: 3. Experimental program. Exploratory tension and compression tests have been performed on glass/epoxy braided tubes containing apolymeric foam core. ... The shear strength of the matrixτY wasdeduced from a tension test on a45 braid (see Harte and Fleck, -
98PA35
www-mech.eng.cam.ac.uk/profiles/fleck/papers/98.pdf6 Jul 2005: Yet current internationalstandards on indentation tests are based on empirical correlations, with little inputfrom analytical and numerical solutions. ... In practical indentation tests it is difficult to control the degree of friction betweenindenter -
doi:10.1016/j.sna.2006.04.025
www-mech.eng.cam.ac.uk/profiles/fleck/papers/236.pdf24 Nov 2006: Theseevices were fabricated by a four-mask process, and electrical tests have confirmed the stepwise increase of the capacitance with bias. ... A four-maskrocess was developed to fabricate these capacitors, and electri-al tests were performed on these -
1 Mechanical properties of the hollow-wall graphene gyroid lattice ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/369.pdf3 Oct 2020: approximately 3 nm. A combination of indentation tests and multi-scale finite element. ... cycles were performed per test. Each loading and unloading segment were of 2s. -
1 aunab pntbdaiattcatfscltancug hTs Aco J Dow B. P. ...
www-mech.eng.cam.ac.uk/profiles/fleck/papers/276.pdf3 Aug 2012: The compression tests were also performed inhe screw-driven test machine, with the loads and strain measuredn a similar manner to that described for the tensile tests. ... Measurement of Bend ResponseThe bend tests on the clamped and simply supported -
doi:10.1098/rspa.2005.1604
www-mech.eng.cam.ac.uk/profiles/fleck/papers/216.pdf24 Jul 2006: The multiple data points at each m valuecorrespond to tests with different velocities vo, see figure 6. ... It comprises a water tube with a piston at one end and a test structure atthe opposite end. -
CUED: Professor Norman A Fleck - list of publications
www-mech.eng.cam.ac.uk/profiles/fleck/publ.shtmlMicro-hardness tests on annealed and work-hardened copper polycrystals. Scripta Met. et Mat.,34(4), pp 559-564, 1996. -
Fracture testing of lithium‐ion battery cathode secondary particles…
www-mech.eng.cam.ac.uk/profiles/fleck/papers/400.pdf14 Aug 2023: displacement response from the test given in Figure 1(d). The. load and displacement both increase until intergranular. ... cohesive strength in tension, whereas the maximum load. measured by the cono-spherical tip indentation tests depends. -
final-Radford-McShane-Deshpande-Fleck
www-mech.eng.cam.ac.uk/profiles/fleck/papers/182.pdf1 Jul 2005: compression tests. In order to present their results, we introduce the strength enhancement. ... impact velocity and initial momentum. The plates were examined after each test to.
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