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alkej-217
Experimental and Theoretical Investigation of Impact Dynamic Plasticity for CK45
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Abstract

This paper represents a study of the effect of the soil type, the drilling parameters and the drilling tool properties on the dynamic vibrational behavior of the drilling rig and its assessment in the drilling system. So first, an experimental drilling rig was designed and constructed to embrace the numerical work.

The experimental work included implementation of the drill-string in different types of soil with different properties according to the difference in the grains size, at different rotational speeds (RPM), and different weights on bit (WOB) (Thrust force), in a way that allows establishing the charts that correlate the vibration acceleration, the rate of penetration (ROP), and the power consumption curves with the depth of drilling.

In addition to that the ANSYS Workbench (the 14.0 release) software was used to simulate and verify the experimental results. And it was also used to model other numerical cases with different drill bit diameters.

Keywords: Soil, Vibration, and Drilling Rig.

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Publication Date
Tue Nov 06 2018
Journal Name
Arab Science Heritage Journal
منهج منهج البيروني ((ت440هـ))في دراسة علم الأرض في كتابه ((تحقيق ما للهند من مقوله مقبولة في العقل أو مرذولة))
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From the above we conclude that the Peronist represents one of the distinguished scientists who had a prominent role in supplying the Arab and Islamic Heritage Library scientific achievements that have had their impact on the Arab-Islamic civilization at a high level of knowledge has given us

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Publication Date
Tue Jan 08 2019
Journal Name
Arab Science Heritage Journal
الأمير كوركوز الاويغوري دراسة في سيرته ودوره السياسي والاداري والاقتصادي والعمراني خلال العصر العباسي 624-641 هـ/ 1226- 1243 م
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حظيت عدد من الشخصيات التاريخية ممن كان لها أثر واضح المعالم في تطور النظام الإداري والسياسي للإمبراطورية المغولية، بأهتمام عدد لا بأس به من الباحثين.

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Publication Date
Sun Jun 01 2008
Journal Name
Journal Of Economics And Administrative Sciences
اختبار أساليب تحديد حجم الدفعة المستخدمة في نظام MRP II* دراسة حالة في الشركة العامة لصناعة البطاريات معمل بابل /1
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      MRP is a system intended for the batch manufacturing of discrete parts including assemblies and subassemblies that should be stocked to support future manufacturing needs.  Due to the useful information provided by MRP it has evolved into a Manufacturing Resources Planning, MRP II, a system that ties the basic MRP system to the other functional areas of the company such as marketing, finance, purchasing, etc.  The objective of this research, which was conducted at the State Company for Batteries Manufacturing, is to test the performance of some popular lot-sizing techniques used within MRP II framework. It is hypothesized that the technique which minimizes the total inventory costs does no

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Publication Date
Sat Jan 30 2021
Journal Name
مجلة الجامعة العراقية
المصادر التنظيمية للاحتراق ومحددات أداء العمل في ظل جائحة COVID -19 دراسة ميدانية لعينة من العاملين في هيئات الحماية الإجتماعية
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The problem of job burnout has become one of the main problems for researchers in social welfare organizations (social protection bodies) - one of the formations of the Ministry of Labor and Social Affairs. Its negative effects increased in light of the COVID-19 pandemic, and in light of the Corona pandemic, the pressures and burdens of workers varied, which resulted in high rates of anxiety, tension, and intellectual and physical exhaustion, and then negatively affected their efficiency in performing work at the individual and organizational level, especially after the increasing tasks of these Bodies in carrying out their role in achieving the general goals and objectives as being The general goals are that they are responsible for provid

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Publication Date
Sat Mar 01 2008
Journal Name
Journal Of Economics And Administrative Sciences
تقويم واقع نشاط التدريب وتوثيقه في إطار تطبيقات المواصفة الإرشادية الدولية (10015 ISO) دراسة حالة في وزارة البلديات والأشغال العامة
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This research has taken to the knowledge of the scope of  applying the international specification of (ISO 10015) which is regarded to training by the Iraqi ministry of municipalities and public works ,in order to determine its training quality .By using the checklist made based upon the items of the specification ,after translating the English copy into Arabic ,which takes the indications of training depending on qualitative bases. The results of the analysis emphasized that occurred total average by comparison the evaluation of the training activity in the mentioned ministry with the international specification in all of its main items, which was (%55) ,and totally documented ,which finally refer to the existence of great

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Publication Date
Wed Dec 01 2010
Journal Name
Journal Of Economics And Administrative Sciences
تقنيات شبكة المعلومات ودورها في إنجاز عمليات الشراء الالكتروني والتسويق الالكتروني* دراسة حالة في شركة بغداد للمشروبات الغازية- المساهمة المختلطة
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Information Technology has become one of the Most Prominent tools in the Era of Technology and Telecommunication of our Digital World. For that Reasons most Organizations had taken the tools Adapted to their Present and Future Directions and for the Improvement for it's Operations and Workability in Internal or External Enviroment. Consequently the Points of Strength Beats the Weakness and as Result of Increase Opportunities and Decrease the Threats Facing these Organizations. This Search has been made to test the Existence or not Existence role of the Information Network Technologies that Include {Internet and Extranet} in Application of Information Technology t

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Publication Date
Wed Dec 12 2018
Journal Name
Arab Science Heritage Journal
الحركة مساهمة المرأة في الحركة العلمية من خلال كتاب (( أنباء الغمر بأبناء العمر )) لابن حجر العسقلاني (773هـ/852هـ) (دراسة تاريخية)
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The search in these subjects makes an importanl accomplishment in the study of the scientific life in that (era)   specialy what the wonen had from a scientific and social level in that(age) the studies of the scientestis which were brilliant in the this era never hed the same as the first scientests . because of the common mistakes toward some resesrchers

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Publication Date
Mon Mar 01 2010
Journal Name
Journal Of Economics And Administrative Sciences
ادوار إدارة المعرفة التنظيمية و رأس مال الزبون العلاقة والأثر/ دراسة تطبيقية على القطاع المصرفي الأهلي في محافظة النجف الاشرف
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يختبر البحث الحالي علاقة الأثر والارتباط بين إدارة المعرفة التنظيمية (المتمثلة قيادة المعرفة، تنظيم المعرفة، عمليات المعرفة، ثقافة المعرفة، تطبيق المعرفة، تقاسم المعرفة) ومتغير (رأس مال الزبون) في مجموعة من المصارف الأهلية في محافظة النجف إذ تمثلت مشكلة الدراسة بمدى دور إدارة المعرفة في هذه المصارف فضلاً عن الزبائن الذين يتعاملون معها، وقد استخدمت استمارة الاستبيان كأداة رئيسة لجمع البيانات إذ تم تو

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Publication Date
Sun Oct 21 2018
Journal Name
Journal Of Planner And Development
الارتقاء بالمناطق التجارية المفتوحة دراسة ميدانية في المنطقة التجارية المفتوحة بشارع النهر منطقة الاسواق التقليدية في باب الاغا كحالة دراسية
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Publication Date
Mon Feb 18 2019
Journal Name
Iraqi Journal Of Physics
Measurement of radon and uranium concentration in soil samples from Babylon cement plant using nuclear track detector CR-39
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In this study, concentrations of radon and uranium were measured for twenty six samples of soil. The radon concentrations in soil samples measured by registrant alpha-emitting radon (222Rn) by using CR-39 track detector. The uranium concentrations in soil samples measured by using registrar fission fragments tracks in CR-39 track detector that caused by the bombardment of U with thermal neutrons from 241 Am-Be neutron source that has flux of 5 ×103n cm-2 s-1.
The concentrations values were calculated by a comparison with standard samples The results show that the radon concentrations are between (91.931-30.645Bq/m3).
The results show that also the uranium concentrat

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