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The results showed that the study of NC electrochemical mechanical drilling difficult-to-machine materials was very meaningful.
Introduction How to efficiently drill good-quality holes in difficult-to-machine materials is a kind of challenge in mechanical machining field.
However, how to improve the cylindricity precision of deep holes in difficult-to-machine materials electrolytic mechanical composite drilling machining is still an important topic worth studying.
Journal of Materials Processing Technology, 2001, 113: 301-305 [3]Zhu.D,Rajurkar.K.P,Modeling and verification of interelectrode gap in electrochemicalmachining with passivating electrolyte,Manufacturing Science and Engineering,The ASME International Mechanical Engineering Congress and Exhibition,Nashville,USA,1999,v 10:589-597 [4]MASUZAWA T, TAKAWASHI T.
Mechanical science and technology, 2006 (6) : 712-715 [7]Xu Jia-wen, Yun Nai-zhang, Wang Jian-ye etc.

It also provides a reference value in the selection of subgrade materials in aeolian soil area.
Test material and method Test material.The cement in this test is Portland Cement 425, gravel, aeolianite, fly ash from local materials nearly.
Take the JH series produced by Jilin Tianyi Building Materials Company as fly ash activator.
In the lack of natural sand soil wind-blowned region, use cement, fly ash to stable wind-borned sand as pavement materials, can doing local materials, reduce the cost of projects
Journal of Hebei North University (Natural Science Edition),2006,12(28): 67-73

The parameter σu and m are material parameters, i.e. independent of the stress state of materials, but may depend on the temperature.
Cannon et al: Mechanics of Materials Vol. 25 (1997), p. 291-308 [6] Tae Sung Oh, R.M.
Evans: Mechanics of materials Vol. 7 (1989), p. 295-304 [10] S.J.
Berg et al: International Journal of Refractory Metals & Hard Materials Vol. 14 (1996), p. 207-211 [12] B.
Bruckner-Foit, D Muaz et al: International Journal of Fracture Vol. 54 (1992), p. 197-210 [20] Hongyang Jing, Lianyong Xu, Lixing Huo et al: Journal of Materials Science and Technology Vol. 20 (2004), p. 113-117 [21] Hongyang Jing, Lianyong Xu, Lixing Huo et al: Journal of Materials Science and Technology Vol. 21 (2005), p. 1-4 [22] Fumiyoshi Minami, S.

Moes, Macroscpoic consequences of Poibert-Luders and Portevin-Le Chatelier bands during tensile Deformation in Al-Mg alloys, Materials Science and Engineering A. vol .746 (2019) 187-196
Brechet, Strengthening via the formation of strain-induced martensite in stainless steels, Materials Science and Engineering A. vol. 387 (2004) 873–881
Aburai, On the Plasticity Induced by Martensitic Transformation in Fe–Ni Alloys and Fe–Ni–Cr Alloys, Journal of the Japan Institute of Metals and Materials. vol. 33, no. 12 (1969) 1383–1389
Pelleg, Mechanical Properties of Materials, Dordrecht: Springer, 2013
Fang, Using the Hollomon Model to Predict Strain-Hardening in Metals, American Journal of Materials Synthesis and Processing. vol. 2, no. 1 (2017) 1-4.

Lipski A., Boroński D., Use of Thermography for the Analysis of Strength Properties of Mini-Specimens, Materials Science Forum, 726, 2012, 156-161
Key Engineering Materials, 598, 2014, 231-236
Key Engineering Materials, 598, 2014, 243-248
Mechanics of Materials, 28 (1), 1998, 155–163
Materials Science and Engineering A, 527 (6), 2010, 1555–1559

In addition, combined with the large-scale loading plate tests of naturally graded rockfill materials, the back analysis of Duncan E-B model parameters were also carried out by Zhu Sheng etc.[7-9].
The Baixi reservior dam was filled with 3.9 million m3 rockfill, Including 3.22 million m3 excavate materials, 0.68 million m3 sandy gravel and concrete face of 48 thousand m2.
J., Concrete face rockfill dam, Huazhong University of Science & Technology Press, Wuhan, 1993
R., Back analysis of mechanical parameters of naturally graded rockfill materials based on large-scale loading plate tests, Chinese Journal of Geotechnical Engineering, 31 (6)(2009) 155-160
M. and Xu Q., Research on increment creep model of coarse grained materials, Rock and Soil Mechanics, 32 (11)(2011) 3201-3496.

Storage modulus were used to denote the resistance deformation ability of materials .Materials had high modulus, which further improved the ability to resistance deformation, consequently, leading to the enhancement of stiffness.
In order to characterize low temperature mechanical properties of materials, Simatos D [9].proposed that fragility parameter was used to characterize low temperature brittleness of materials.
The smaller the m value, the smaller brittleness, the higher strength .That was: materials were not easy to fracture and break.
Polymer Materials Science and Engineering, 2010, 26(12):20 -23
Creep behavior of bisphenol E cyanate ester/alumina nanocomposites .Materials Science and Engineering A, 2010, 527(21):5892-5899

Formulation of raw materials.
Journal of Applied Polymer Science, 40(2023): 1-13
Bulletin of Materials Science, 39(2016): 159-165
Advanced Functional Materials, 26(2016): 1470-1476
Key Engineering Materials, 6253(2021): 202-206

Materials and Methods Materials.
Mohan, “Synthesis and Water Absorbency of Crosslinked Superabsorbent Polymers,” Journal of Applied Polymer Science, Vol. 85, pp. 1795–1801, 2002
Tu, “Superabsorbent polymeric materials.
Gonclaves, “Effects of Fine LWA and SAP as Internal Water Curing Agents, “International Journal of Concrete Structures and Materials, Vol 8, pp. 229-238, 2014
Sivaranjani, “Study on the properties of concrete by using superabsorbent polymer,” Materials Science Published, DOI:10.22214/ijraset.2017.3118, 2017

Hydroxyapatite (HA) is a bioceramics that commonly used as bone substitute materials, coating materials and scaffolds in orthopedics.
Methodology Materials and synthesis procedure.
(Ed.), Comprehensive Structural Integrity: Fracture of Materials from Nano to Macro Elsevier Ltd., Oxford, 2003
Fei Yee, Macroporous Bioceramics: a Remarkable Material for Bone Regeneration, Journal of Biomaterials Applications (2011) 1-14
Contro, Controlled drug delivery from porous hydroxyapatite grafts: An experimental and theoretical approach, Materials Science and Engineering: C 25 (2005) 207-213