A Comparative Study of Regularization Method in Structure Load Identification by Bingrong Miao, Feng Zhou, Chuanying Jiang, Xiangyu Chen, Shuwang Yang

“…The results show that using the two identification methods Tikhonov (L-curve) and TSVD (GCV-curve) can successfully and accurately identify the different excitation forces of the external hammer. The TSVD based on GCV method has more advantages than the Tikhonov based on L-curve method. …”
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Study on the Failure of the Bolted Flange Connection Structure between Stages of Missiles (Rockets) under Transverse Impact Load by Tonghui Tian, Jiehong Yuan, Daokui Li, Qingwen Wang, Baisheng Chen

“…Based on the bolted flange connection structure between stages of the missiles, four experimental specimens are simplified and manufactured, and the transverse impact failure experiments of the drop hammer are designed and carried out in this study. …”
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An Investigation on Low Velocity Impact Response of Multilayer Sandwich Composite Structures by S. Jedari Salami, M. Sadighi, M. Shakeri, M. Moeinfar

“…Low velocity impact tests were carried out by drop hammer testing machine to the clamped multilayer sandwich panels with expanded polypropylene (EPP) and polyurethane rigid (PUR) in the top and bottom cores. …”
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Design and Construction of Block and Tackle Pulley System Using Locally Available Resources. by Asaba, Patrick

“…Therefore, my improvised block and tackle system was constructed using a fixed pulley, a moveable pulley, a rope, a Hole cutter/hole saw, a Baw saw, a Plane, a Tape measure, a Pencil, a Grooving machine, a Jig saw, Hammer.…”
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Design and Construction of An Electric Bell. by Ndyanabo, Donard

“…When the switch is closed, current flows through the circuit which makes the electro-magnet become magnetized hence attracting the armature thus the hammer hits the gong. This produces a repetitive sound until when the switch is turned off and no current is flowing…”
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Optimization and prediction of paver block properties with ceramic waste as fine aggregate using response surface methodology by G. Uday Kiran, Nakkeeran G., Dipankar Roy, George Uwadiegwu Alaneme

“…The evaluations involve aspects like compressive strength, water absorption (WA), dry density, flow table measurements, ultrasonic pulse velocity (UPV), and rebound hammer tests. The results indicate that replacing natural aggregates with up to 30% CW significantly improves compressive strength (CS) and Rebound results from tests. …”
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Field Tests to Investigate the Penetration Rate of Piles Driven by Vibratory Installation by Zhaohui Qin, Longzhu Chen, Chunyu Song, Lei Sun

“…The working parameters of vibratory hammer, such as driving force and vibratory amplitude, have great influences on the penetration rate of the pile, especially at the later stages of the sinking process. …”
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Impact Resistance of Concrete Containing LLDPE–Waste Tire Rubber and Silica Fume by Imad A. Khalhen, Reza Aghayari

“…Six cylinders with 150 and 60 mm were subjected to an impact by a 4.45 kg hammer striking. Test results indicated that impact resistance for the first visible crack and the ultimate failure increased with LLDPE-R content, where it increased by 4.76 times. …”
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Improving the Stability of Mining Slopes in Tarcha Coal Mine, Southwestern Ethiopian Deposit Through Geometric Adjustments by Getaneh Abebay, Endalu Tadele Chala, Nagessa Zerihun Jilo, Tiyasha Tiyasha

“…Results indicated that the rock quality designation (RQD) of the rocks ranged from 22 to 57.5, indicating rock quality from very poor to fair. Schmidt hammer tests revealed uniaxial compressive strength (UCS) values between 14.79 and 29.31 MPa. …”
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Impulse Force Balance for Ultrashort Duration Hypersonic Test Facilities by P. Singh, V. Menezes, K. J. Irimpan, H. Hosseini

“…Dynamic calibration of the test assembly was carried out for the acquisition of impulse response functions for the above components of force and moments, using an impulse hammer. The convolution technique was applied to derive the impulse response functions. …”
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Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet Cycles by Xinrong Liu, Zijuan Wang, Yan Fu, Wen Yuan, Luli Miao

“…In terms of the degradation of mechanical parameters of rock mass in the hydrofluctuation belt of a reservoir bank slope arising from rainfall and the reservoir level fluctuation, the moderately weathered sandstone in a side slope of the Three Gorges Reservoir Region is selected as a research object to carry out “drying-saturation-drying” tests for disks with two thicknesses (h=25 mm, h=50 mm) in different cycles; a spiral CT machine, an ultrasonic velocity meter, and a light Schmidt hammer are utilzed to conduct nondestructive testing on dry-wet cycles; through the Brazilian splitting test, the uniaxial tensile strength of “dry” and “saturated” sandstones under different dry-wet cycles is obtained. …”
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Experimental Investigation of Wave-Induced Ship Hydroelastic Vibrations by Large-Scale Model Measurement in Coastal Waves by Jialong Jiao, Huilong Ren, Shuzheng Sun, Christiaan Adika Adenya

“…The testing procedure is presented by illustrating a 5-hour voyage trial of the large-scale model carried out at Huludao harbor of China in August 2015. Hammer tests were performed to identify the natural frequencies of the ship model at the beginning of the tests. …”
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Experimental and Analytical Investigation Based on 1/2 Scale Model for a Cleanroom Unit Module Consisting of Steel Section and Reinforced Concrete by Sijun Kim, Se Woon Choi

“…The dynamic test using an impact hammer is conducted to obtain the transfer function of 1/2 scale model. …”
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Numerically evaluate axial force variations of jointed precast piles during construction by Md. Foisal Haque, Ishtiaque Ahmed

“…For this purpose, this research proposes an innovative concept of spring model of jointed precast pile to evaluate the axial force variations along the length to consider some variable parameters (i.e. soil elastic moduli, soil Poisson’s ratios, hammer loads, compressive strengths and sizes of precast piles). …”
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Experimental and Numerical Simulations Predictions Comparison of Power and Efficiency in Hydraulic Turbine by Laura Castro, Gustavo Urquiza, Adam Adamkowski, Marcelo Reggio

“…Mass flow rate was obtained using Gibson's water hammer-based method. A numerical counterpart was carried out by using the commercial CFD software, and flow simulations were performed to principal components of a hydraulic turbine: runner and draft tube. …”
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Hereditary neuropathy with liability to pressure palsies: a case series report by S. Naudžiūnaitė, R. Bunevičiūtė, B. Burnytė

“…Three patients (42.9%) were found to have atrophy of the legs (calves or feet), hammer deformities of the toes, and pes cavus. Foot drop was observed in four patients (57.1%). …”
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Study on the Influence of Closed-Cell Aluminum Foam on the Impact Performance of Concrete Pier after Equal Replacement with Stainless Steel Reinforcement by Xiwu Zhou, Honglong Zhang, Wenchao Zhang, Guoxue Zhang

“…In this study, the impact test of two groups of reinforced concrete piers protected by closed-cell aluminum foam is carried out by using the ultrahigh drop hammer impact test system. The purpose of this study is to explore the impact resistance and protective performance of closed-cell aluminum foam under the impact load on the concrete bridge pier after replacing the ordinary reinforcement with stainless steel reinforcement. …”
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Physical and Combustion Characteristics of Briquettes Made from Water Hyacinth and Phytoplankton Scum as Binder by R. M. Davies, O. A. Davies

“…The water hyacinths were manually harvested, cleaned, sun-dried, and milled to particle sizes distribution ranging from <0.25 to 4.75 mm using hammer mill. The water hyacinth grinds and binder (phytoplankton scum) at 10% (B1), 20% (B2), 30% (B3), 40% (B4), and 50% (B5) by weight of each feedstock were fed into a steel cylindrical die of dimension 14.3 cm height and 4.7 cm diameter and compressed by hydraulic press at pressure 20 MPa with dwell time of 45 seconds. …”
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Effects of Different Milling Methods on the Quality of Whole Wheat Flour by DENG Chong, HU Xiuting, LUO Shunjing, LIU Chengmei

“…To investigate the effect of milling equipment on the quality of whole wheat flour, four whole wheat flours with similar average particle sizes were obtained by direct crushing methods (hammer cyclone mill, gear mill, and low-temperature impact mill) and back addition method (Chopin mill), and their nutritional compositions, polyphenol contents, damaged starch contents, and gelatinization properties were evaluated. …”
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