Measurement of Degree of Compaction of Fine-Grained Soil Subgrade Using Light Dynamic Penetrometer by Junhui Zhang, Yongsheng Yao, Jianlong Zheng, Xiangqun Huang, Tian Lan

“…Then, a prediction equation of the penetration ratio (PR) defined as the depth per drop of the hammer of LDP, degree of compaction (K), and water content (ω) was built. …”
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Experimental Modal Analysis of Viscoelastic Sandwich Structures by Meera-Saheb Koppanati, Sairag Lanka, Krishna Bhaskar Kalidindi, Kalyanamanohar Veeramallu

“…Through the use of the Impact Hammer Modal Testing technique, experimental modal analysis is carried out with SAMURAI and ME' Scope software. …”
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Study on Concrete Pier Impact Performance after Implementing Equal Cross-Section Stainless Steel with Protection from Closed-Cell Aluminum Foam by Xiwu Zhou, Honglong Zhang, Wenchao Zhang, Guoxue Zhang

“…In the present study, in order to examine the impact performances of ordinary reinforced concrete bridge piers which have been replaced by stainless-steel bars of equal cross-sections under the protective condition of anticollision material, the impact dynamic responses of the ordinary reinforced concrete bridge piers, with replacements under the protection of closed-cell aluminum foam, were compared and analyzed using an ultrahigh drop hammer impact test system. The results showed that when the impact velocity was small (for example, less than 1.42 M/s), after the implementation of equal cross-sectional replacements, the closed-cell aluminum foam had been in an elastic or yield stage. …”
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Optimizing design and stability of open pit slopes in Tolay coal mine, Ethiopia by Eyerusalem Alemayehu, Endalu Tadele Chala, Nagessa Zerihun Jilo, Tiyasha Tiyasha, Belachew Moges

“…Geological mapping, discontinuity analysis, Schmidt hammer tests for uniaxial compressive strength (UCS), and laboratory testing of soil samples were performed to assess material properties. …”
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Impact response and post-impact compression behavior of two-dimensional triaxially braided carbon fiber composites by SUN Yang, HUANG Jian, ZHAO Zhenqiang, ZHOU Haili, LI Chao, ZHANG Liquan, ZHANG Chao

“…The mechanical response of two-dimensional triaxially braided composite under high and low velocity impact are investigated through the air gun system and drop hammer impact test system with different energies. …”
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Wavelet Transform-Based Damage Identification in Bladed Disks and Rotating Blades by P. Rajendran, N. Jamia, S. El-Borgi, M. I. Friswell

“…In this study, experiments were conducted to obtain BTT measurements on rotating blades at 100 rpm using three different sensors: an active eddy current sensor, a passive eddy current sensor, and an optical sensor. In addition, hammer excitation experiments were conducted for various added mass (damage) cases to compute the damage severity for a bladed disk. …”
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Socioeconomic disparities in children's posture defects: a comparison between private and public educational institutions by Lukasz Kolodziej, Sebastian Kwiatkowski, Magda Gebska, Ireneusz Walaszek, Karolina Skonieczna-Żydecka

“…The least common problems were funnel chest (0.37%), cavus foot (0.10%), and hammer toe deformity (0.04%). The general trend shows that problems with flat feet and calf muscle contracture were more common among participants in both types of educational institutions. …”
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Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature by Yang Zeng, Hao Chen, Rong Yu, Zhiyuan Shen, Zixian Yu, Jingxi Liu

“…Low ambient temperature was created by the liquid nitrogen in a low-temperature chamber, and a dropping hammer was dropped from the same height with a constant impact energy of 5 J to carry out the repeated impact. …”
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Liquefiable Ground Treatment Using Cruciform Section Probe Resonant Compaction Method: A Case Study in the Xitong Expressway, Eastern China by Guangyin Du, Han Xia, Jun Cai, Huangsong Pan, Changshen Sun

“…The strengthening mechanism of the CSPRCM is a vibration hammer that generates vibrational energy to obliterate the original soil structure and render the sand completely liquefied; the soil particles then rearrange to form a new structure.…”
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Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure by Christopher Padilla, Antonio Flores, Ezekiel Granillo, Jonah Madrid, Abdessattar Abdelkefi

“…Experimental testing is performed on each system including a free vibration test using an impact hammer to excite and identify the dominant frequencies of each structure. …”
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Sudeten: Erinnerung reinterpretiert by Jan Pacholski

“…After World War II, this monument was reinterpreted; Borussian symbols were removed from it, including the emblematic eagle taking flight and the visage of von Götzen himself, and replaced with a hammer and sickle and a red star. As a result, it became one of many so­called monu­ ments of gratitude to the Red Army. …”
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DIC-Based Operational Modal Analysis of Bridges by Gongfa Chen, Zhihua Wu, Chunjian Gong, Jiqiao Zhang, Xiaoli Sun

“…A steel truss is used as a bridge model and stimulated by a hammer; its dynamic displacement is recorded by using a digital video camera. …”
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“Dastur al-katib” as a source on history of state, law and chancellery culture of the Golden Horde (by the example of yarlighs on the appointment of emirs of the ulus) by Abzalov L.F., Gatin M.S., Mustakimov I.A., Pochekaev R.Yu.

“…Hindushah Nakhchivani in its Persian original as well as in German translation by J. von Hammer-Purgstall. The present work also employs other medieval sources on history of the Golden Horde and Iran in the Hulaguid and Jalayir epochs. …”
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Lateral Polydactyly of the Foot: Surgical Outcomes Based on a New Classification by Junko Otsuka, MD, Emiko Horii, MD, Shukuki Koh, MD, Hiroki Takeshige, MD

“…Three patients with type A-P classification developed painful hammer toe deformities as a late sequela that necessitated extensor tenolysis and metatarsophalangeal joint contracture release during their school-age years. …”
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Study on Vibration Response of Layered Media under the Impact Load by Mengyang Zhen, Jun Liu, Zhimin Xiao, Futian Zhao, Yue Wang, Chen Ou, Zheng Liu, Haowen Zheng

“…A large number of impact loading tests were carried out by using a simple drop hammer device designed by us. The experimental results indicate that, under the impact load, the vibration response of the surface of the medium decreases with the increase in the distance to the impact source, showing the law of fast attenuation near field and slow attenuation far field, and the vibration energy moves to the low-frequency component; the vibration response increases with the increase in the impact energy, and the difference in the vibration response caused by the impact energy decreases as the distance increases; the vibration response is negatively correlated with the thickness of the dielectric layer, and the divergence of vibration response caused by impact energy decreases with the increase in the thickness of the dielectric layer. …”
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Features of nutrition of women and children in Ishim district of Omsk region during the Great Patriotic War by A. A. Frolova

“…The periodical press presented by the local newspaper «Hammer and Sickle» helps to reconstruct the picture of everyday life of the Ishim people during the Great Patriotic War. …”
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The Reach of Depression Screening Preceding Treatment: Are There Patterns of Patients' Self-Selection? by Dea Ajduković, Mirjana Pibernik-Okanović, Mario Šekerija, Norbert Hermanns

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Editorial by Jörg Tremmel, Maria Lenk, Antony Mason, Markus Rutsche

“…Here, the exchange happens between the same generational cohorts but while they are in different age groups. In their work, Hammer, Istenič and Vargha adapt this idea in the context of the welfare state, pinpointing the role of human capital-building and reproduction for the maintenance of generational contracts. …”
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Behavioral analysis of steel I-beams under repeated dynamic loads: Impact of various impactor head types by Zeynep Yaman, Yusuf Sümer, Elif Ağcakoca, Mahyar Maali, Abdulkadir Cüneyt Aydın

“…The 100 kg impact load is applied from a height of 2200 mm with a hammer head having three different geometric shapes (rectangular, circular and triangular). …”
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Experimental study on the impact of perpendicular and parallel bedding planes on the physical and geomechanical characteristics of carbonate rocks by Ahmed K. Abd El-Aal, Ahmed E. Radwan, Jabir Hussain, Mahrous A. M. Ali

“…High-strength rocks were identified from the uniaxial unconfined compressive strength (UCS), tensile strength (t), point-load strength (IS50), and Schmidt hammer rebound (SHR) values. Regression analysis was used to derive various correlations between the acoustic and geomechanical properties, and these associations were interpreted in light of the microfacies and diagenetic processes. …”
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