The Relationship Between Microstructure and Mechanical Properties of Late 19th/Early 20th Century Wrought Iron Using the Generalized Method of Cells Model

2002 ◽  
Vol 712 ◽  
Author(s):  
Jennifer J. Hooper ◽  
Lori Graham ◽  
Tim Foecke ◽  
Timothy P. Weihs
Keyword(s):  
Mechanical Properties ◽  
20Th Century ◽  
Mechanical Response ◽  
Early 20Th Century ◽  
Inelastic Behavior ◽  
Silicate Slag ◽  
Wrought Iron ◽  
Generalized Method Of Cells ◽  
The Relationship

ABSTRACTThe discovery of the RMS Titanic has led to a number of scientific studies, one of which addresses the role that the structural materials played in the sinking of the ship. Chemical, microstructural, and mechanical analysis of the hull steel suggests that it was state-of-the-art for 1912 with adequate fracture toughness for the application. However, the quality of the wrought iron rivets may have been an important factor in the opening of the steel plates during flooding. Preliminary studies of Titanic wrought iron rivets revealed an orthotropic, inhomogeneous composite material composed of glassy iron silicate (slag) particles embedded in a ferrite matrix. To date, very little is understood about the properties of wrought iron from that period. Therefore, in order to assess the quality of the Titanic material, contemporary wrought iron was obtained from additional late 19th/early 20th century buildings, bridges, and ships for comparison. Image analysis completed on the Titanic wrought iron microstructure showed a high slag content that is very coarse and unevenly distributed. To investigate how microstructure impacts the mechanical properties, and hence the quality of late 19th/early 20th century wrought iron, a detailed analysis of the relationship between the microstructural features and the mechanical behavior was completed. Here we present the first step in that process: the use of the Generalized Method of Cells (GMC) to predict the mechanical response of composites with variable microstructural properties. The GMC tool is used to generate the effective inelastic behavior of the composite from the individual constituent properties.

Metallurgical Analysis of Wrought Iron From the RMS Titanic

2003 ◽  
Vol 40 (02) ◽  
pp. 73-81
Author(s):  
Jennifer J. Hooper ◽  
Tim Foecke ◽  
Lori Graham ◽  
Timothy P. Weihs
Keyword(s):  
Mechanical Properties ◽  
20Th Century ◽  
State Of The Art ◽  
Compositional Analysis ◽  
Steel Plates ◽  
Early 20Th Century ◽  
Wrought Iron ◽  
Metallurgical Analysis ◽  
Hull Steel

The discovery of the RMS Titanic has led to a number of scientific studies, one of which addresses the role that structural materials played in the sinking of the ship. Early studies focused on the quality of the hull steel as a contributing factor in the ship's rapid sinking, but experimental results showed that the material was "state-of-the-art" for 1911. Instead, it was suggested that the quality of the wrought iron rivets may have been an important factor in the opening of the steel plates during flooding. Here the quality of RMS Titanic wrought iron is examined and compared with contemporary wrought iron obtained from additional late 19th-/early 20th-century buildings, bridges, and ships. Traditional metallurgical analysis as well as compositional analysis, mechanical testing, and computer modeling are used to understand the variation in the mechanical properties of wrought iron as a function of its microstructure.

Russian Empire’s Religious Institutions in the 18th - Early 20th Century: The Evolution of “Friend - Alien - Foe” Relations

2021 ◽  
Vol 20 (1) ◽  
pp. 8-31
Author(s):  
Alexandre Yu. Bendin
Keyword(s):  
20Th Century ◽  
Legal Status ◽  
18Th Century ◽  
Early 20Th Century ◽  
Religious Institutions ◽  
Religious Tolerance ◽  
Religious Discrimination ◽  
Old Believers ◽  
Institutional Relations ◽  
The Relationship

The Russian governments three principal institutions to regulate the empires diverse religions from the 18th to the early 20th century are examined. Its author describes the evolution of these bodies, their features and purpose, as well as defining the concept of religious security by analyzing its specific historical content. The author also discusses the relationship between the institutions of the official Russian Church, religious tolerance for foreign confessions, and discrimination against the Old Believers through the prism of friend - alien - foe relations. This approach helps us understand the hierarchical nature of the relations and contradictions that existed between the institutions, whose activities regulated the religious life of the Russian Empires subjects until 1905. The article goes on to analyze the relationship between the official legal status of the Russian Church, imperial tolerance, and religious discrimination. It concludes that the formation of the three state-religious institutions that began in the 18th century ended during the reign of Emperor Nicholas I. That time saw the beginning of the gradual evolution of friend - alien - foe inter-institutional relations, which peaked under Emperor Nicholas in 1904-1906. The author also considers the changes in the governments policy towards the Russian schism of the 17th century, which ultimately removed the friend-or-foe opposition in the relations between the Russian state, the Russian Church and the schismatic Old Believers. In accordance with the modernized legislation on religious tolerance, lawful Old Believers and sectarians moved from the category of religious and political foes to that of aliens, to which foreign confessions traditionally belonged. Under the new legal and political conditions, intolerance and religious discrimination against the schism ceased to be an instrument of state policy.

Djalkiri

2021 ◽  
Keyword(s):  
20Th Century ◽  
Early 20Th Century ◽  
Philosophical Foundations ◽  
Collaborative Community ◽  
Arnhem Land ◽  
New Type ◽  
The University ◽  
The Relationship ◽  
Over Time

Djalkiri are “footprints" – ancestral imprints on the landscape that provide the Yolŋu people of eastern Arnhem Land with their philosophical foundations. This book describes how Yolŋu artists and communities keep these foundations strong, and how they have worked with museums to develop a collaborative, community-led approach to the collection and display of their artwork. It includes contributions from Yolŋu elders and artists as well as Indigenous and non-Indigenous historians and curators. Together they explore how the relationship between communities and museums has changed over time. From the early 20th century, anthropologists and other collectors acquired artworks and objects and took photographs in Arnhem Land that became part of collections at the University of Sydney. Later generations of Yolŋu have sought out these materials and, with museum curators, proposed a new type of relationship, based on a deeper respect for Yolŋu intellectual frameworks and a commitment to their central role in curation. This book tells some of their stories.

The Sound of India In Maurice Delage’s Quatre Poèmes Hindous

2020 ◽  
Vol 65 (2) ◽  
pp. 277-296
Author(s):  
Noémi Karácsony
Keyword(s):  
20Th Century ◽  
Point Of View ◽  
The Other ◽  
Western Music ◽  
Personal Contact ◽  
Early 20Th Century ◽  
French Music ◽  
Sound Effects ◽  
Instrumental Technique ◽  
The Relationship

"French composer and pianist Maurice Delage wrote several significant works inspired by his personal contact with the Orient. His travels to India inspired Delage to use innovative sound effects in his compositions, as well as to require his performers to adapt their vocal or instrumental technique to obtain the sound desired by the composer. His representation of the Orient is not a mere evocation of the Other, as is the case with most orientalist works, rather it reflects the composer’s desire to endow Western music with the purity, strength, and vivid colors which he discovered and admired in Indian music. The present paper presents the historical and artistic background which inspired and influenced Delage, the relationship between France and India in the early 20th century and reveals the composer’s idealistic point of view regarding India, its culture, and its music. The analysis focuses on the mélodie cycle Quatre poèmes hindous, composed between 1912 and 1913, striving to reveal the Indian influences in the work of Delage and the way orientalism is represented in French music from the first decades of the 20th century. Keywords: orientalism, France, India, 20th century, Maurice Delage"

A Quantitative Evaluation of the Quality of Recycled Steel in Uganda

2012 ◽  
Author(s):  
C. Senfuka ◽  
J. B. Kirabira ◽  
J. K. Byaruhanga
Keyword(s):  
Mechanical Properties ◽  
Raw Material ◽  
Emission Spectrometry ◽  
Test Results ◽  
Geometrical Properties ◽  
Direct Reduced Iron ◽  
The Relationship ◽  
Recycled Steel ◽  
Made In

All steel made in Uganda is currently manufactured from scrap. Such steel has often been characterized by unpredictable performance in consonance with its inconsistent raw material inputs. This study evaluates and relates the mechanical, metallurgical and geometrical properties of these bars in order to identify the factors underlying the performance of the products from this steel and examine the relationship with their scrap content. In order to study the steels, tensile, torsion and micrographic tests have been carried out together with spark emission spectrometry on samples collected from different plants. The test results generally indicate impressive steel resilience, strength and metallographic properties in spite of relatively high and irregular carbon content. Limited weldability, uniaxiality of properties, uneven scatter of microelements and substantial non-uniformity of longitudinal mechanical properties have been observed. Rolling and post rolling defects have been noted. The geometric reliability of the bars has also been found generally low. Improvement of secondary refinement, use of direct reduced iron (DRI) diluent and more diligent sorting have suggested as solutions.

scholarly journals On the Tragic Sense in Unamuno and Pessoa “Les fois que l’impossible au nécessaire se joint”

2020 ◽  
Author(s):  
Francesca Pasciolla
Keyword(s):  
Iberian Peninsula ◽  
20Th Century ◽  
Miguel De Unamuno ◽  
Early 20Th Century ◽  
Literary Creation ◽  
Fernando Pessoa ◽  
Mutual Awareness ◽  
The Relationship

To confront two major writers and, indeed, thinkers of the Iberian Peninsula in the early 20th century is a challenge to be embraced, albeit with some circumspection. In the process, the tense relationship between the discourses of literary creation and philosophical musing will be broached. The evidence of any mutual awareness of their respective writings in the case of Miguel de Unamuno and Fernando Pessoa is scant. Whilst there is no recognition in the former of the latter, the Portuguese author certainly knew enough of the writings of the prolific Spaniard to have published several texts wherein he rejected the thinking of his near-contemporary. Close examination, however, reveals that the relationship between the writings of the two is complex enough to bear further scrutiny.

scholarly journals Emplacement of ideas. The development of geographical thought in Brazil in the early 20th century

Finisterra ◽  
2012 ◽  
Vol 33 (65) ◽  
Author(s):  
Lia Osorio Machado
Keyword(s):  
20Th Century ◽  
The Other ◽  
Early 20Th Century ◽  
Target Model ◽  
Source Models ◽  
Geographical Source ◽  
The Relationship

This paper looks at the circulation of modern geographical ideas in Brazil. The focus is on the relationship between geographical source models and the target model of domestic modernization. Three corresponding "mechanisms" provided the translation from one to the other: gradualism, adaptation and essentialism.

APPROACHES TO TELEPATHY IN RUSSIA IN THE LATE 19TH - EARLY 20TH CENTURY

2020 ◽  
pp. 100-115
Author(s):  
Vassa A. Pyatkova ◽  
Keyword(s):  
20Th Century ◽  
The Body ◽  
Academic Science ◽  
Early 20Th Century ◽  
Religious Groups ◽  
Scientific Terminology ◽  
Common Trend ◽  
Quality Of Living ◽  
Human Psyche

The article describes a variety of approaches to realizing the phenomenon of telepathy in Russia in the late 19th – early 20th century. Telepathy kindled interest of scientists, occultists, members of religious groups and general public. Reasons behind the interest towards this phenomenon varied in each specific case. Scientists viewed telepathy as a phenomenon that was worth exploring, and created theories that would explain it. At the same time, some of them regarded such studies as a way of justifying the possibility of life outside of a physical body. Telepathic experiments aimed to prove the independence of human psyche from the body were also conducted by those not associated with academic science. Occultists preferred describing the phenomenon of telepathy without resorting to scientific terminology and used occult anthropological concepts instead. In popular occultism represented by mentalism, telepathy was viewed as a practice capable of improving the quality of living. Christian spiritualists and some representatives of Orthodox clergy took interest in telepathy as a means of proving the immortality of soul. Moreover, they used the telepathy theory to justify the efficacy of traditional religious practices, in particular the prayer. Despite of the variances in the reasons behind the interest towards telepathy and in its explanations, the interest to this phenomenon reflected a common trend of that age towards rethinking the anthropology

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