Experimental Stress Analysis : Proceedings of the VIIIth International Conference on Experimental Stress Analysis, Amsterdam, the Netherlands, May 12-16, 1986 Organized by: Netherlands Organization for Applied Scientific Research (TNO) on behalf of The Pe

Designing and manufacturing structures of all kinds in an economic and a safe way is not possible without doing experimental stress analysis. The modernity of structures, with their higher reliability demands, as well as today's more stringent safety rules and extreme environmental conditions necessitate the improvement of the measuring technique and the introduction of new ones. Although theoretical/mathematical analysis is improving enormously, an example of which is the finite element model, it cannot replace experimental analysis and vice versa. Moreover, the mathematical analysis needs more and more accurate parameter data which in turn need improved experimental investigations. No one can do all those investigations on his own. Exchange of knowledge and experience in experimental stress analysis is a necessity, a thing acknowledged by every research worker. Therefore, the objective of the Permanent Committee for Stress Analysis (PC SA) is to promote the organization of conferences with the purpose disseminating new research and new measuring techniques as well as improvements in existing techniques, and furthermore, to promote the exchange of experiences of practical applications with techniques. rhis Vlllth International Conference on Experimental Stress Analysis on behalf of the PC SA is one in a series which started in 1959 at Delft (NL), and was followed by conferences at Paris (F), Berlin-W, Cambridge (~K), Udine (I), Munich (FRG) and Haifa (Isr.). Such a Conference will be held in Europe every fourth year, half-way bewteen the IUTAM Congresses. Front Matter....Pages I-XI Measure and Design of Stresses in Adhesive Bonded Trusses: Extensometrical and Laser-Elasticimetrical Methods....Pages 1-9 Automated Testing of Concrete Compressive Properties....Pages 11-20 Metallic Structures Under Mechanical and Cyclical Thermal Loading....Pages 21-29 Response of Spherical Shells Under Apex Load to Varying Proportions....Pages 31-40 Study of Stress Distribution in the Walls of Vessel Containers for High - Pressure Gas....Pages 41-48 The Experimental Analysis of the Stress Distribution in a 1000m 3 Spherical Steel Tank From the Petro-Chemical Industry....Pages 49-56 Small-Scale Testing of End-Restrained Tubular Beam-Columns....Pages 57-64 Experimental Stress Analysis with Automation of MeasureMents and Data Processing Using Vibro-Wire Gauges During the Construction of One Segmental Box-Girder Prestressed Concrete Bridge....Pages 65-73 An Experimental Investigation of the Behaviour of Flat Rectangular Plates Under the Action of Combined In-Plane and Lateral Loading....Pages 75-85 Techniques in Experimental Stress Analysis for Reinforced Concrete Structures....Pages 87-96 Experimental and Theoretical Research into the Collision Resistance of Inland LPG-Carriers....Pages 97-105 Experimental Stress Analysis at Plastic Deformations....Pages 107-116 Micro-Computer Based Measurement and Processing Method for Human Locomotor System’s Take-Off Properties Evaluation....Pages 117-122 Buckling of Axially Compressed Imperfect Cylinders and Ring Stiffened Cylinders Under External Pressure....Pages 123-132 Stress Analysis of Threaded Connections Secured by Locknuts....Pages 133-140 Redesign and Development of a Force Transducer of the Buckle Type....Pages 141-150 Determination on Forces and Moments in Pipe Cross-Sections: Fitting of Experimental Strain Measurements on a Mechanical Analytical Model....Pages 151-156 Pressure Measurements on Spatially Curved Elastic Surfaces during Crash Tests....Pages 157-164 Investigation into the Loosening of Risers in Carbon-Dioxide Cylinders for Fixed Fire-Extinguishing Systems Aboard Ships....Pages 165-173 Interaction of Stress Concentrations at Pores in a Material Performed by Photoelastic Modelling....Pages 175-180 Cepstrum Analysis as a Useful Supplement to Spectrum Analysis for Gear-Box Monitoring....Pages 181-190 New Method for Measurement of Time Characteristics of Mechanical Systems....Pages 191-195 Automatic Display of Campbell Diagrams of Start-Up and Run-Dow Processes....Pages 197-206 Determination of Material Constants Using Experimental Free Vibration Analysis on Anisotropic Plates....Pages 207-214 Biaxial Failure Testing of a Transverse Isotropic Brittle Material....Pages 215-220 A System for Crack-Opening-Displacement Measurement and Photomicrography of Cracks at High Temperatures....Pages 221-231 Evaluation of Recently Proposed Recommendations for the Determination of Fracture Parameters for Concrete in Bending....Pages 233-244 Determination of Dynamic Mode I and Mode II Fracture Mechanics Parameters From Photoelastic Data....Pages 245-254 Mode II and Mode III Fracture Testing of Adhesive Joints Using a Stiff Adherend Specimen....Pages 255-262 An Integrated Software/Hardware Approach to Experimental Stress Analysis....Pages 263-270 Experimental-Numerical Hybrid Technique for Stress Analysis of Plates with Holes in Post Buckling State....Pages 271-280 Digital Image Processing in Experimental Mechanics....Pages 281-290 Comparative Study of the Sensitivity of Various Measurement Techniques on “Glasses”-Shaped Elastic Element Models Analysed by the Finite Element Method....Pages 291-300 Vibration Analysis Using Moire Interferometry....Pages 301-306 Heterodyne Moire Interferometry — Some Experience of the Development of a Rapid Measurement System....Pages 307-314 On the Limits to the Information Obtainable from a Moire Fringe Pattern....Pages 315-329 Interpretation of Moiré Effect for Curvature Measurement of Shells....Pages 331-340 Optical Method of Strain Measurement. Application to Study of Circular Bending of a Beam in the Large Strain Range....Pages 341-350 The Phase Shift Method Applied to Reflection Moiré Pattern....Pages 351-358 Detection of Fringe Pattern Information Using a Computer Based Method....Pages 359-368 Fatigue Life Prediction of Spot-Welded Lap Joints by Moire Interferometry....Pages 369-378 Evaluation of Finite Element Calculations in a Curve-Fronted Crack by Coherent Optics Techniques....Pages 379-386 Real-Time Moire-Holographic Analysis of Plates with Sharp V-Notches in Tension....Pages 387-395 Investigation on Crack Closure by Real-Time Holo-Interferometry....Pages 397-405 Experimental Investigation of Dynamic Contact Problems by Means of the Method of Caustics....Pages 407-416 Photometric Methods of Caustics....Pages 417-428 Evaluation of Strain Gauge Measurements in Elasto-Plastic Area....Pages 429-437 Errors Associated with the Use of Strain Gages on Composite Materials....Pages 439-446 How to Avoid Errors Caused by Heat Effects in Strain Gage Measurements when Using Scanning Units....Pages 447-454 Compensation of Leadwire Effects with Resistive Straingauges in Multi-Channel Straingauge Instrumentation....Pages 455-464 Recent Development of the Spate Technique for Measuring Stress in Structures Loaded with Complex Waveforms....Pages 465-477 A New Experimental Stress Analysis Technique of Wide Application....Pages 479-487 Use of the Thermoelastic Technique in Experimental Stress Analysis....Pages 489-498 Opportunities and Limitations of Thermoelastic Stress Analysis....Pages 499-505 Some Practical Limits to the Applicability of the Thermo-Elastic Effect....Pages 507-518 Pressure-Sensitive Photoelastic Sheets....Pages 519-523 The Boundary Element Method, An Accelerating Calculation Process Used in Experimental Stress Analysis....Pages 525-533 Computer-Aided Measurement of Relative Retardations in Plane Photoelasticity....Pages 535-542 Checking the Shear-Difference Method in Case of Photoelastic Coating....Pages 543-549 On a Nonlinear Theory of Photoelasticity....Pages 551-557 Strain Distribution During Hot Rolling of Strip by Photoplastic Simulation....Pages 559-567 On Vibration and Shock Isolation of Sensitive Goods by Viscoelastic Packaging Materials....Pages 569-577 Laboratory Tests on Encapsulated High Temperature Strain Gages SG 425 for Measurements up to 530°C....Pages 579-588 Strain Measurements at Variable Temperatures up to 300 °C within a Prestressed Concrete Pressure Vessel by Means of Encapsulated Welded Strain Gages....Pages 589-597 Loss of Stability of Underground Excavations - View on a Possibility of Prediction....Pages 599-604 Specific Techniques in 2d Stress Analysis....Pages 605-611 Experimental Stress-Strain Field in Elastomeric O-Ring Seals....Pages 613-622 Measurement of Tectonic Rock Strain in Iceland....Pages 623-631 Back Matter....Pages 633-637